Citre asks

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

David Graveline asks

What are the most recent theories about what existed before our big bang? Have there been one or...

peel from the Internet asks

What would happen if the nucleus of an atom contained too many or too few neutrons, or even none? ...

Rod from canterbury asks

Is there any magnetic shielding material which is not itself attracted by a magnet?

James Hope from Gloucester asks

I have a physics paper here (don't worry i am not asking you for the answers!) that says each U-235...

YIanni Mitropoulos from Melbourne asks

If a sound is played to a person over a period of time, is there a way to work out (or to estimate)...

George Murphy asks

An article in the National Geographic magazine describes the Big Bang event as linear in form. Does...

Hongyi Li asks

Does antimatter's gravity have the same properties ordinary matter?

Chris asks

Can absolute zero (0 degrees Kelvin or -273.16 degrees Celsius) be registered on a thermometer,...

Leo Capistrano asks

How long would a single molecule of a radioactive element last? If the half-life of U-235 reduces...

Yevgeniy Perev from Staten Island asks

When our galaxy will absorb the 2 Magellanic Clouds, that will produce a starburst. For how long...

Tyler Salo asks

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

Ryan from Maryland asks

I'm doing a science experiment with magnets and was wondering, do magnets lose their strength over...

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...

Gregg Echols from Phoenix asks

What are the temperatures reached at the focused point of a magnifying glass, when using the sun as...

Ron Belmont asks

How do you calculate potential energy for an object which is sitting on the floor? PE=mgh, which...

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...

Benoît Mailhot asks

Are light and matter the same thing? Can you get matter from light?

Mouabbi Rami from Athens asks

Why do most industrial LASER diodes emit pulsing light beams and not continuous ones? And what is...

George Chronis from Toronto asks

I have a few questions regarding Space-Time that have always confused me. I would very much...

Mike from Brussels asks

I have been doing an experiment in school and I don't understand why the following happens. When we...

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...

Stanley Jeffs from Cortona asks

I have been reading Feynman and what he says seems to make sense to me, in particular:photons are...

Harry Pritchard asks

How can I find out whether it takes more effort (work by pump) to increase the air pressure in a...

Edward Driedger asks

How do touch lamps work? If one person touches the touch pad and someone else taps his other hand,...

Gabriel from Winnipeg, MB asks

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

nijin k from Khd asks

What is the heat wanted to melt the hardest substance in the world?

Paul from Romania asks

What i don't understand is why the intensity of the electric field is 0 inside a charged (empty on...

David Keirsey asks

What are the quantum numbers that are involved in the distinction between matter and antimatter? I...

A. D. asks

I am interested in the age-old debate on whether a person gets wetter by walking in the rain or by...

James Hope from Gloucester asks

I recently read a book on the big bang, and it said that protons and neutrons are made up of 3...

Ed from Port Orchard, Washington, USA asks

Do magnets become less massive over time? It requires energy to hold a magnet on the refigerator...

Dane Haas from Flesherton asks

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

Jesse from Ottawa, Ontario asks

Why do ceramic magnets lose their strength in extremely cold temperatures like dry ice?

Fred Bucheit asks

How does mass shifting affect Earth's rotation? Could melting of polar icecaps cause a change in...

Anonymous from Ajax, Ontario asks

If mass can be converted to energy by using E=mc2, how can energy be converted to mass?

Arnaud Bigeu asks

How does the static universe theory (Gamow, Hoyle...) explain the 3K cosmic background radiation....