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Astronomy & Space

If the sun shrinks 1 million times, would it become 1 million times denser

YES (if the mass remains the same) lets say the sun hypothetically weighs 5 million grams and has a volume of 5 m^3, then its density would be : mass/volume = 5,000,000 / 5 = 1,000,000 gm^3 if it s

What can I see through a 130mm reflector

My dad and I ordered an Orion SpaceProbe 130ST Equatorial Reflector Telescope today. I have a pretty old 60mm refractor right now and have seen several things like Saturn, the moon, etc.... Anyway, wi

Where to buy black/ultraviolet light for glow in the dark project

Where can I get the small light bulbs or small tubes for my school project? were making glow in the dark water and powder. does the cell phone light work?URGENT!!! does walmart sell them? thank you so

Is time affected by motion

Yes. The faster you move, the slower time passes for you relative to your surroundings. The effect is called time dilation and only becomes really noticeable at very high speeds.-Time, as a perceptio

Question on spaceship insulation

Im doing a project on spaceship insulation and its physical (atomic structure/composition) properties. I need to relate how its properties help insulate a spacecraft. I found that silicon carbide is t

Early scientists thought that the sun produced it's energy by

a) rotating b)expanding c) collapsing inward d) burning fuel? also, scientists later thought that energy to heat the sun was released from a)gravity b) pressure c) globules d) kinetic energy? i suck

How would the earth look like if there were no sun

We wouldnt be alive if there were no sun.-Here is an answer that I gave for a similar question. It may help: If the Sun disappeared suddenly (dont ask how), people on Earth would not know of it for a

Higgs boson found! all the mysteries of matter solved by a 115GeV ball

Even finding the Higgs boson would not necessarily answer the mysteries of matter. What is a Higgs particle made of? Or any others? Just as the ancient Greeks were wrong when they thought that atoms w

Can you explain escape velocity to me

I read that to escape Earths gravity a rocket must travel at 40.000 KMH. Why cant the rocket travel at just 20.000 KMH and just take twice as long to escape the gravity. I never understood this thin

Who won the Space Race in your opinion

The Space Race between the USSR and USA.-I would say that both nations benefitted greatly by way of technological advancement from it. Thus far, the US has gone much, much further, though the Russians

What happens if you fire a fission bomb to the sun

Absolutely nothing. The Sun is nearly one and a half million kilometres across, and contains 99.8% of all the mass in the solar system. You could drop every planet, moon, asteroid, and comet on the S

Telescope question! Which barlow lens is best for my 'scope

I have an 8 inch dobsonian skywatcher skyliner. All the details are here:http://www.warehouseexpress.com/buy-Sky-… I would really like to purchase a barlow lens, one that will increase the magnificat

Places where the sky is always starry

Are there any places you know of where the sky is said to always be really starry at night? Thanks!!-The best place in the world is the Atacama Plateau in South America. Next best in Mauna Kea in Hawa

Suppose astronomers discover a new planet farther away from the Sun than Earth. How would the day and year of

If there was another planet revolving around the Sun, but further from the Sun than Earth is, its year would be longer. But its day could be anything, as it depends how fast the planet spins around on

Are there inhabited places in the world where the sun doesn't rise or set in a whole day

I know the poles can experience several days without sunrise (polar night) or sunset (polar day), but are there any countries/ land where this happens that happen to be inhabited. By inhabited I would
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