Jeana Willis asks

How long would it take for the Earth to freeze if the Sun burnt out?

spandan jansari asks

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Dave Mackay from the Internet asks

What is inside an atom? In between the electrons and the neutron? Maybe if you pictured the atom as...

Sara asks

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Mateusz from New York asks

Is it true that the moon moves away from the earth a few centimeters each year? Also do satellites...

Jeff asks

How do astronomers know the true position of stars? When astronomers show us pictures of the Great...

Richard from Flesherton asks

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JP from Chandler asks

Given that the Earth's magnetosphere is what protects us and all life on Earth from the deadly...

Mike Smith asks

Can you help me with the physics of an amusement park ride called the Magic Carpet? The Magic...

Sacha from Charleston asks

Yesterday I was watching "Hercules" with my little sister and now I wonder: Have the planets ever...

Tamara Bain from Edmonton asks

My brother and I have a very important bet and it is about the following: If you remove the...

Richard from Abilene asks

Are there any planned future deep space explorations planned say in the next 5 or so years. Surely...

JP from Tempe asks

If you had a seamless sealed box which was lined with a 100% reflective material, and somehow...

Salman Sattar asks

I am a novice and I am looking to buy a telescope for around $350. Which one would be better for...

Daniel from SIngapore asks

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Richard L. Gibbens from Colorado asks

My question concerns the latest news about the Cosmological Constant. Has it now been established...

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In energy transformations, even on the subatomic level, is some energy always lost as thermal...

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As an undergraduate computer engineering student, how can I best prepare myself for a career in...

Donald W. Owens asks

Can you explain the formula for computing the hydrogen burning lifetime of a star with 15 solar...

KENNETH HICKFORD from LONDON ENGLAND asks

(1) What quantities of the earths atmosphere are lost to outer space over a given time? (2) how...

Karan Rustagi from Ontario asks

I heard that electricity can be transmitted in other forms than electron flow; like electromagnetic...

Cheryl from Chesapeake, VA asks

I teach moon phases to my third graders. On posters, in textbooks, and online, I have seen...

Tracy Weddell from Bakersfield, CA asks

Do neutron stars evolve further? Charts of star evolution always show the neuton star as the last...

Alicia asks

What would be the appearance of the moon if it were in the western sky just after sunset? Why would...

Serge Bellemare asks

Do all planets and stars rotate on themselves, and do we know why?

Kjell from Edmonton asks

Does light exert force?

Matt from the Internet asks

Is the orbit of the moon around earth a perfect circle? If not, when is the moon closest to us? ...

Derrick Smith from Jacksonville asks

In science fiction it is common to see P-P fusion, but my reading seems to indicate it is...

Citre asks

What kind of weather is on Mercury and Saturn? Does it rain or snow on these planets?

Tyler Salo asks

When rockets were sent to Jupiter, did scientists get any readings? Does Jupiter have a solid...

Pierre Charbonneau, Eng. from Jonquière, Quebec, Canada asks

Is there actually a strobe light on the International Space Station? I saw in the sky a sequence of...

Gaston Fournier asks

NASA has recently detected the presence of ice on the moon. Since the moon is surrounded by void...

Jonas Malmgren asks

Is the interstellar space between the galaxies completely empty? Not even a single star or a nebula?

patric hedlund asks

According to my family, a comet streaked through the sky the morning one of my uncles was born. His...

Marin from the Internet asks

Is it possible to create plasma using two high voltage electrodes , cathode and anode. Would air...

David Dexter from Mill Valley, CA, USA asks

This came up during a homeschool astronomy lesson: Why does the back of the Moon not have large...

Gabriel from Winnipeg, MB asks

What is the distance from the sun for each of the elements in the periodic table where they would...

Dane Haas from Flesherton asks

What are the most recent solar storms and will they effect the Earth's atmosphere?

Arnaud Bigeu asks

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Eric Cashmore asks

What is the name of the most recent planet discovered, and where is it?