Канал: Vijñāna Viśhva :: Science World

क्या नीले पेपर को जलाने से नीली रौशनी मिल सकती है || How to get a blue flame by burning a paper.

क्या नीले पेपर को जलाने से नीली रौशनी मिल सकती है || How to get a blue flame by burning a paper.

स्टार्टिक करंट किस तरह से उत्पन्न होता है और || how we can shock someone with our body charge

स्टार्टिक करंट किस तरह से उत्पन्न होता है और || how we can shock someone with our body charge

क्या होगा अगर हम भ्रस्पति ग्रह को छोटा कर दे तो || Must watch it will take your breath ||

क्या होगा अगर हम भ्रस्पति ग्रह को छोटा कर दे तो || Must watch it will take your breath ||

क्या किसी भी रंग को तरल पदार्थों में मिला कर अलग किया जा सकता है || what is laminar flow

क्या किसी भी रंग को तरल पदार्थों में मिला कर अलग किया जा सकता है || what is laminar flow

Depth of the sea || ये आपको हैरान कर देगा

Depth of the sea || ये आपको हैरान कर देगा

जाने की कंपास को घर में कैसे बना सकते है और ये कैसे काम करता है How to make a compass at home & more

जाने की कंपास को घर में कैसे बना सकते है और ये कैसे काम करता है How to make a compass at home & more

हाइपर लूप कैसे काम करता है। क्यों इसपर 1000km तेज होने पर भी फ्रिक्शन नही लगता || So let get to know

हाइपर लूप कैसे काम करता है। क्यों इसपर 1000km तेज होने पर भी फ्रिक्शन नही लगता || So let get to know

Red phosphorus reaction with oxygen.

Red phosphorus reaction with oxygen.

Get out Hindus

Get out Hindus

Korea is boycotting INDIANS and saying Get our HINDUS

Korea is boycotting INDIANS and saying Get our HINDUS

why they are boycotting INDIANS , क्यों हिंदुओं को निकाला जा रहा है ?

why they are boycotting INDIANS , क्यों हिंदुओं को निकाला जा रहा है ?

Indians Got BANNED in South korea || why Koreans treating Indians in this way ? हिन्दू बाहर निकलो

Indians Got BANNED in South korea || why Koreans treating Indians in this way ? हिन्दू बाहर निकलो

Angular Fish

Angular Fish

What if the moon suddenly disappears

What if the moon suddenly disappears

What If we can compress the Jupiter || क्या होगा अगर हम ब्रशपति संकुचित कर दे तो

What If we can compress the Jupiter || क्या होगा अगर हम ब्रशपति संकुचित कर दे तो

Who discovered all planets || why did no one is telling the truth?

Who discovered all planets || why did no one is telling the truth?

The advanced flying machines were there in Vedic Bharat as compared to today | Vedic Part -2

The advanced flying machines were there in Vedic Bharat as compared to today | Vedic Part -2

Vedic knowledge #Vedas #sanatandharma #science

Vedic knowledge #Vedas #sanatandharma #science

Issac Newton never invented anything he stole everything from India

Issac Newton never invented anything he stole everything from India

what will happen to humans after extension

what will happen to humans after extension

Will the life return after extension || क्या पृथ्वी पर जीवन खत्म होने के बाद दोबारा फिर लोट पाएगा

Will the life return after extension || क्या पृथ्वी पर जीवन खत्म होने के बाद दोबारा फिर लोट पाएगा

What if we spend only 5 seconds on Uranus

What if we spend only 5 seconds on Uranus

What is the shape of our universe

What is the shape of our universe

Vacuum is not a Vacuum || There is no actual vacuum.

Vacuum is not a Vacuum || There is no actual vacuum.

Do you think the Sun is trying to destroy us ?

Do you think the Sun is trying to destroy us ?

Finally found life on another planet || Found life on k2 18b.

Finally found life on another planet || Found life on k2 18b.

Why the voice of blasts are completely different on other planets

Why the voice of blasts are completely different on other planets

NASA received a message from 15 million kilometres from space

NASA received a message from 15 million kilometres from space

Sound of universe || listen it properly

Sound of universe || listen it properly

What if the sun will suddenly disappear

What if the sun will suddenly disappear

What If an aircraft crossed 50 miles of Altitude || Karman Line

What If an aircraft crossed 50 miles of Altitude || Karman Line

The truth of Sanatan's

The truth of Sanatan's

China's Enormous Underwater Telescope To Hunt "Ghost Particles"

China's Enormous Underwater Telescope To Hunt "Ghost Particles"

This is our future

This is our future

Moon got hit by something

Moon got hit by something

Welcome you're on Venus

Welcome you're on Venus

What if we lost oxygen for 5 seconds

What if we lost oxygen for 5 seconds

What if there is no oxygen for five seconds

What if there is no oxygen for five seconds

Dark matter was the biggest lie

Dark matter was the biggest lie

What if the moon suddenly disappears 🥺

What if the moon suddenly disappears 🥺

!! Aliens !!

!! Aliens !!

Gravity of a neutron star

Gravity of a neutron star

Earth without the humans

Earth without the humans

Quantam Physics

Quantam Physics

Gameover !!

Gameover !!

A day on Mars

A day on Mars

A Martin's Day

A Martin's Day

Constellation Centaurus || The triple star system.

Constellation Centaurus || The triple star system.

Will the moon let us live on it ?

Will the moon let us live on it ?

Amazing Dance videos of Sir S. Somanath at ISRO

Amazing Dance videos of Sir S. Somanath at ISRO

Vela pulsar || producing atoms at 70% speed of light ||

Vela pulsar || producing atoms at 70% speed of light ||

How Aditya L1 will work, कैसे काम करेगा आदित्य एल १ |

How Aditya L1 will work, कैसे काम करेगा आदित्य एल १ |

Big bang was never a beginning, it was the end.

Big bang was never a beginning, it was the end.

Aditya L1, The Indian solar mission

Aditya L1, The Indian solar mission

Aditya L1 launch successful, mission to the sun || launch successful ||

Aditya L1 launch successful, mission to the sun || launch successful ||

Chandrayan-3 new discoveries चांद पर मिली ऑक्सीजन

Chandrayan-3 new discoveries चांद पर मिली ऑक्सीजन

Chandrayan-3 has released new video

Chandrayan-3 has released new video

New video released by ISRO, check it out.

New video released by ISRO, check it out.

WOW !!! chandrayan-3 rover will imprint these things on the moon's surface

WOW !!! chandrayan-3 rover will imprint these things on the moon's surface

chandrayan-3 starts exploring the moon , real video of Vikram lander || credit: ISRO

chandrayan-3 starts exploring the moon , real video of Vikram lander || credit: ISRO

Chandrayan-3 captured something amazing after landing

Chandrayan-3 captured something amazing after landing

Chandrayan-3 landing full video

Chandrayan-3 landing full video

Chandrayan-3 landing ( full video )

Chandrayan-3 landing ( full video )

New images captured by chandrayan-3

New images captured by chandrayan-3

Update on chandrayaan-3

Update on chandrayaan-3

Lost control on Moon mission

Lost control on Moon mission

luna-25 is overtaking our Chandrayan-3

luna-25 is overtaking our Chandrayan-3

Chandrayan-3 today

Chandrayan-3 today

Vela pulsar ||video credit: seekers of the cosmos ||

Vela pulsar ||video credit: seekers of the cosmos ||

Which place will you choose?

Which place will you choose?

The revolution's

The revolution's

Where do we stand !!

Where do we stand !!

We are living in a simulator

We are living in a simulator

Chandrayan-3 launch || Chandrayan-3 lift off

Chandrayan-3 launch || Chandrayan-3 lift off

|| Big Bang was never a beginning ||

|| Big Bang was never a beginning ||

|| Finally found the earth's second Moon ||

|| Finally found the earth's second Moon ||

|| THIS IS SOMETHING WHICH WILL KILL YOUR EGO ||

|| THIS IS SOMETHING WHICH WILL KILL YOUR EGO ||

|| Supernova explosions ||

|| Supernova explosions ||

|| Geocentric vs Heliocentric ||

|| Geocentric vs Heliocentric ||

|| Saturn Vs Super Saturn ||

|| Saturn Vs Super Saturn ||

| ISS TIME-LAPSE |

| ISS TIME-LAPSE |

Hyperspace tunnel

Hyperspace tunnel

|| Energy of A microscopic black hole ||

|| Energy of A microscopic black hole ||

|| What Causes High & low tide ||

|| What Causes High & low tide ||

|| Rogue Planets | Some strange Planets of the universe ||

|| Rogue Planets | Some strange Planets of the universe ||

|| An Eclipse From Space ||

|| An Eclipse From Space ||

|| Think before you blink | 0.25 seconds in Space ||

|| Think before you blink | 0.25 seconds in Space ||

|| How does Aurora forms ||

|| How does Aurora forms ||

|| KELT-9b || An ultra-hot Jupiter

|| KELT-9b || An ultra-hot Jupiter

|| Proxima Centauri | The nearest star to our solar system ||

|| Proxima Centauri | The nearest star to our solar system ||

|| Why 94% of galaxies are unreachable ||

|| Why 94% of galaxies are unreachable ||

|| Type of sounds from Neutron Star | Sound generated by PULSAR'S ||

|| Type of sounds from Neutron Star | Sound generated by PULSAR'S ||

|| Post 150 million years for space ||

|| Post 150 million years for space ||

||All supernova explosion of 10 lakh years in one minute | what are Constellations||

||All supernova explosion of 10 lakh years in one minute | what are Constellations||

|| How Much High can you Jump on Gas Giant planets ||

|| How Much High can you Jump on Gas Giant planets ||

|| Gravity on different Places ||

|| Gravity on different Places ||

|| Gravity on different Planets and places in Universe ||

|| Gravity on different Planets and places in Universe ||

Earth's moon is going to disappear || Mars Moon is Going to collide

Earth's moon is going to disappear || Mars Moon is Going to collide

What if the moon suddenly disappear, क्या होगा अगर चंद गायब हो जाए तो

What if the moon suddenly disappear, क्या होगा अगर चंद गायब हो जाए तो

|| Was the Big Bang Real ? What is HD 140283 ||

|| Was the Big Bang Real ? What is HD 140283 ||

|| Five planets conjunction || Planets Conjunction tonight

|| Five planets conjunction || Planets Conjunction tonight

|| Constellation Ophiuchus || where is Voyager 1 space craft

|| Constellation Ophiuchus || where is Voyager 1 space craft

|| Isro lift off, Isro launch today || launched 500+ Satellites

|| Isro lift off, Isro launch today || launched 500+ Satellites

|| Triple star system || Constellation Centaurus

|| Triple star system || Constellation Centaurus

Plot twist : There is nothing like Dark matter, डार्क मैटर जैसा कुछ नही होता फिर क्यों बोला गया झूठ

Plot twist : There is nothing like Dark matter, डार्क मैटर जैसा कुछ नही होता फिर क्यों बोला गया झूठ

|| We're Orbiting this Blackhole right now ||

|| We're Orbiting this Blackhole right now ||

|| Types of Stars ||

|| Types of Stars ||

|| Life on a neutron star || #shorts

|| Life on a neutron star || #shorts

Types of stars in Universe, ब्रह्मांड के कुछ अन्होखे सितारे।

Types of stars in Universe, ब्रह्मांड के कुछ अन्होखे सितारे।

|| Life was never begin on earth ||

|| Life was never begin on earth ||

What is a God Particle, what is Higgs boson

What is a God Particle, what is Higgs boson

Nasa Spacex crew-5 splashdown (full video) March/23

Nasa Spacex crew-5 splashdown (full video) March/23

|| Company's will deliver the products from Space directly || #shorts

|| Company's will deliver the products from Space directly || #shorts

|| The Solar system Battle || #shorts

|| The Solar system Battle || #shorts

|| Holes of Universe ||

|| Holes of Universe ||

|| What is a light year ||

|| What is a light year ||

|| What are ZOMBIE PLANETS ||

|| What are ZOMBIE PLANETS ||

Alien Life has been confirmed, मिल गया एलियंस के होने का सबूत

Alien Life has been confirmed, मिल गया एलियंस के होने का सबूत

|| Crew-6 Space-X Falcon 9 lift off (02-03-2023) ||

|| Crew-6 Space-X Falcon 9 lift off (02-03-2023) ||

|| Are we Alone ||

|| Are we Alone ||

What will happen if the sun will suddenly disappear, क्या होगा अगर सूर्य एक साथ गायब हो जाए तो ?

What will happen if the sun will suddenly disappear, क्या होगा अगर सूर्य एक साथ गायब हो जाए तो ?

Crew-6 lift off , Crew-6 launch full video

Crew-6 lift off , Crew-6 launch full video

| Clouds On Planets |

| Clouds On Planets |

Evolution of earth In 30 seconds

Evolution of earth In 30 seconds

Everything about Antimatter, क्या है ये और कैसे खत्म होगी दुनिया

Everything about Antimatter, क्या है ये और कैसे खत्म होगी दुनिया

|| Andromeda galaxy 1900 ||

|| Andromeda galaxy 1900 ||

|| what if the earth was like a donut ||

|| what if the earth was like a donut ||

|| The reason Why earth has Rings 🤯 ||

|| The reason Why earth has Rings 🤯 ||

|| Why this astronaut was kicked out from a library ||

|| Why this astronaut was kicked out from a library ||

Captured Jupiter at day light #shorts #space #universe #facts #planets #cosmos #fact #study

Captured Jupiter at day light #shorts #space #universe #facts #planets #cosmos #fact #study

How a Solid is Solid which is actually not solid, E=mc² ये जानकारी आपका दिमाग घुमा सकती है

How a Solid is Solid which is actually not solid, E=mc² ये जानकारी आपका दिमाग घुमा सकती है

Which place will you choose next #shorts #space #universe #facts

Which place will you choose next #shorts #space #universe #facts

Helix nebula #shorts #universe #space

Helix nebula #shorts #universe #space

Meteor strike France Yesterday #shorts #space #universe

Meteor strike France Yesterday #shorts #space #universe

Nebulae #shorts #space #universe

Nebulae #shorts #space #universe

our universe is expending or shrinking ? #shorts #universe #space

our universe is expending or shrinking ? #shorts #universe #space

what will you choose if you're dead #shorts #space #universe

what will you choose if you're dead #shorts #space #universe

14th February A special day for space lovers #shorts #space #universe

14th February A special day for space lovers #shorts #space #universe

From Big bang till the earth's end, ब्रह्मांड की संरचना से पृथ्वी के विनाश तक।

From Big bang till the earth's end, ब्रह्मांड की संरचना से पृथ्वी के विनाश तक।

The fastest traveling object made by humans, speed 500000+ km/h #shorts #space #universe

The fastest traveling object made by humans, speed 500000+ km/h #shorts #space #universe

What if our Sun will Turn into a black hole #shorts #space #universe

What if our Sun will Turn into a black hole #shorts #space #universe

A beautiful view of Saturn by my telescope 🇮🇳 #shorts #space #universe #facts

A beautiful view of Saturn by my telescope 🇮🇳 #shorts #space #universe #facts

Sun compering to biggest star is unexpected #shorts

Sun compering to biggest star is unexpected #shorts

what will happen if you get stuck into a blackhole

what will happen if you get stuck into a blackhole

End of earth in 30 seconds #shorts #solarsystem #space #universe #facts #educational #planets

End of earth in 30 seconds #shorts #solarsystem #space #universe #facts #educational #planets

Compression of Earth with biggest planet #shorts #space #universe #facts #educational #planets

Compression of Earth with biggest planet #shorts #space #universe #facts #educational #planets

String theory in 60 seconds #shorts #solarsystem #space #universe #stringtheory #educational #facts

String theory in 60 seconds #shorts #solarsystem #space #universe #stringtheory #educational #facts

Sunset on planet's #shorts #solarsystem #space #universe #facts #educational #planets #cosmos #study

Sunset on planet's #shorts #solarsystem #space #universe #facts #educational #planets #cosmos #study

What if the space wasn't sound proof #shorts #solarsystem #space #universe #facts #educational #fact

What if the space wasn't sound proof #shorts #solarsystem #space #universe #facts #educational #fact

10 years in 10 seconds, १० साल १० सेकंड्स मे #shorts #cosmos #universe #space #facts #educational

10 years in 10 seconds, १० साल १० सेकंड्स मे #shorts #cosmos #universe #space #facts #educational

ISRO 2023 MISSION, Isro's Solar mission , ISRO का सूर्य मिशन

ISRO 2023 MISSION, Isro's Solar mission , ISRO का सूर्य मिशन

Cargo ship reaching ISS full time-lapse, #shorts #space #universe #facts #planets #educational #fact

Cargo ship reaching ISS full time-lapse, #shorts #space #universe #facts #planets #educational #fact

Future, present & past Moon #shorts #solarsystem #space #universe #facts #educational #planets

Future, present & past Moon #shorts #solarsystem #space #universe #facts #educational #planets

Plants on Moon #shorts #space #universe #facts #solarsystem #planets #educational #study #knowledge

Plants on Moon #shorts #space #universe #facts #solarsystem #planets #educational #study #knowledge

Rover on Moon (A video by NASA) #shorts #space #universe #facts #educational #nasa #moon #science

Rover on Moon (A video by NASA) #shorts #space #universe #facts #educational #nasa #moon #science

MOON HIT BY AN OBJECT #shorts #solarsystem #space #universe #facts #educational #moon #planets

MOON HIT BY AN OBJECT #shorts #solarsystem #space #universe #facts #educational #moon #planets

inclination and declination angle of planets #shorts #solarsystem #space #universe #facts

inclination and declination angle of planets #shorts #solarsystem #space #universe #facts

Appollo Landing #shorts #space #solarsystem #universe #facts #educational #facts #virl #trending

Appollo Landing #shorts #space #solarsystem #universe #facts #educational #facts #virl #trending

NASA Space walk, (full video)

NASA Space walk, (full video)

What will happen ? if it will happen ! #shorts #solarsystem #space #universe #facts #educational

What will happen ? if it will happen ! #shorts #solarsystem #space #universe #facts #educational

Green comet & betelgeuse today's view, क्या है ये दोनो ओर क्या प्रभाव होगा पृथ्वी पर ?

Green comet & betelgeuse today's view, क्या है ये दोनो ओर क्या प्रभाव होगा पृथ्वी पर ?

Death of stars #shorts #solarsystem #space #universe #facts #educational #planets #supernova

Death of stars #shorts #solarsystem #space #universe #facts #educational #planets #supernova

GREEN COMET #shorts #space #universe #comet #educational #facts #greencomet

GREEN COMET #shorts #space #universe #comet #educational #facts #greencomet

Smallest particles of universe #shorts #particles #solarsystem #space #universe #educational #study

Smallest particles of universe #shorts #particles #solarsystem #space #universe #educational #study

Mars time-lapse video, with noise #shorts #facts #solarsystem #space #universe #knowledge #mars

Mars time-lapse video, with noise #shorts #facts #solarsystem #space #universe #knowledge #mars

How Do A spacecraft slow down #shorts #space #universe #solarsystem #study #facts #educational

How Do A spacecraft slow down #shorts #space #universe #solarsystem #study #facts #educational

How do a spacecraft lands in non atmospheric zone , what is retro propulsion

How do a spacecraft lands in non atmospheric zone , what is retro propulsion

How an asteroid reacts with the earth atmosphere #shorts #educational #space #universe #fact #study

How an asteroid reacts with the earth atmosphere #shorts #educational #space #universe #fact #study

Asteroid Impact's on earth #shorts #indian #space #universe #planets #asteroid #facts #educational

Asteroid Impact's on earth #shorts #indian #space #universe #planets #asteroid #facts #educational

What will happen if an asteroid hits the earth, impact of an asteroid on earth, Meteor & Meteoroite

What will happen if an asteroid hits the earth, impact of an asteroid on earth, Meteor & Meteoroite

London size ICEBERG breaks off of Antarctica #shorts #space #solarsystem #universe #iceberg #planet

London size ICEBERG breaks off of Antarctica #shorts #space #solarsystem #universe #iceberg #planet

2023 BU , 27-Jan-23 A closed passing Asteroid ever recorded

2023 BU , 27-Jan-23 A closed passing Asteroid ever recorded

27-Jan-2023 A closed passing Asteroid to earth ever #shorts #solarsystem #universe #asteroid #space

27-Jan-2023 A closed passing Asteroid to earth ever #shorts #solarsystem #universe #asteroid #space

Why does the moon look like it ? #shorts #solarsystem #space #universe #facts #planets #moon #earth

Why does the moon look like it ? #shorts #solarsystem #space #universe #facts #planets #moon #earth

Pro-grade and retrograde orbiting planets #shorts #solarsystem #space #universe #planets #cosmos

Pro-grade and retrograde orbiting planets #shorts #solarsystem #space #universe #planets #cosmos

Days on other Planets compared to earth #shorts #solarsystem #space #universe #planets #cosmos #days

Days on other Planets compared to earth #shorts #solarsystem #space #universe #planets #cosmos #days

Is there weather on the moon? yes! #shorts #solarsystem #universe #space #moon #weather #facts

Is there weather on the moon? yes! #shorts #solarsystem #universe #space #moon #weather #facts

Is There weather on the MOON , The lunar atmosphere

Is There weather on the MOON , The lunar atmosphere

Rotation Period of planets , Planets and their Orbiting Period

Rotation Period of planets , Planets and their Orbiting Period

Planets & their Angle of rotation on axis #shorts #solarsystem #planet #space #universe

Planets & their Angle of rotation on axis #shorts #solarsystem #planet #space #universe

Why does the VENUS called Earth's EVIL TWIN #shorts #universe #space #solarsystem #venus #earth

Why does the VENUS called Earth's EVIL TWIN #shorts #universe #space #solarsystem #venus #earth

Why is Venus called earth's Evil twin ? शुक्र ग्रह को पृथ्वी की बहन क्यों कहते हैं ?

Why is Venus called earth's Evil twin ? शुक्र ग्रह को पृथ्वी की बहन क्यों कहते हैं ?

8+5 but why no one knows the remaining 5 yes it's about planets #shorts #universe #space #planet

8+5 but why no one knows the remaining 5 yes it's about planets #shorts #universe #space #planet

Five more planets of the solar system, whom No-one knows , dawrf planets

Five more planets of the solar system, whom No-one knows , dawrf planets

Temperature of blackholes #shorts #solarsystem #space #universe #blackhole #facts #galaxy

Temperature of blackholes #shorts #solarsystem #space #universe #blackhole #facts #galaxy

Fastest spinning object in solar system #shorts #solarsystem #space #universe #india #trending

Fastest spinning object in solar system #shorts #solarsystem #space #universe #india #trending

Indian space research organisation #shorts #space #universe #solarsystem #indian #india #trending

Indian space research organisation #shorts #space #universe #solarsystem #indian #india #trending

Realtime 3D view of Comets & astroids around solar system #shorts #universe #space #solarsystem

Realtime 3D view of Comets & astroids around solar system #shorts #universe #space #solarsystem

satellites around the earth #shorts #universe #space #youtubeshorts #solarsystem #satellite #earth

satellites around the earth #shorts #universe #space #youtubeshorts #solarsystem #satellite #earth

Why magnetic compass always shows north , and why it always shows wrong direction 'Magnetic compass'

Why magnetic compass always shows north , and why it always shows wrong direction 'Magnetic compass'

what else is around the sun #shorts #universe #space #youtubeshorts #solarsystem #sun #earth

what else is around the sun #shorts #universe #space #youtubeshorts #solarsystem #sun #earth

how human body elements are formed #shorts #universe #space #youtubeshorts #solarsystem #short

how human body elements are formed #shorts #universe #space #youtubeshorts #solarsystem #short

The highest volcano eruption, 300+km #shorts #space #universe #shortvideo #earth #moon #youtubeshort

The highest volcano eruption, 300+km #shorts #space #universe #shortvideo #earth #moon #youtubeshort

BIGGEST ARCHIVEMENTS BY INDIA IN 2022 #shorts #universe #space #youtubeshorts #solarsystem #isro

BIGGEST ARCHIVEMENTS BY INDIA IN 2022 #shorts #universe #space #youtubeshorts #solarsystem #isro

sunset and sunrise on iss #shorts #short #youtubeshorts #space #universe #iss #solarsystem #earth

sunset and sunrise on iss #shorts #short #youtubeshorts #space #universe #iss #solarsystem #earth

133 days around the sun #shorts #sun #universe #space #solarsystem

133 days around the sun #shorts #sun #universe #space #solarsystem

133 days around the sun in 4 minutes of time-lapse, observation of sun from orbit

133 days around the sun in 4 minutes of time-lapse, observation of sun from orbit

Is the explosion possible in space ? How does the explosion happens in space

Is the explosion possible in space ? How does the explosion happens in space

recent closest photo of Jupiter #shorts #universe #space #solarsystem #jupiter

recent closest photo of Jupiter #shorts #universe #space #solarsystem #jupiter

What was the colour of earth before , what is purple earth hypothesis

What was the colour of earth before , what is purple earth hypothesis