Once the Solar System was nothing but a cloud of gas. No heavy elements, just hydrogen from deep space from the Big Bang. How did it all come together to...

My guess is that the orbit of a man-made satellite circling the earth might decay because of residual air molecules causing friction. Is this true? Is our...

Pardon my ignorance on this, but why are there not SCT's with Dobsonian mounts? I mean, would it not make sense as then you would not need a ladder to view...

Has anyone actually looked at the base that the face is sitting on? The top is flat. The sides are all built up at the same angle. It has three sides of a...

How can Universe is just 12-15 billion years old? Hubble can see objects 12 billion light years away from us. Now, we can see light from those objects emited...

Can someone explain why all techtonic activity ceased so long ago on mars -- is it because the planet is much smaller than earth that it can't sustain a molten...

OK, I realize starting off with "What If" deducts about 57 points from my credibility score, but I couldn't think of a better way to start off, so bear with...

Why is Venus seen as a crescent right now? What is blocking it's reflected light making it appear so?

Hello, If you look at the spherules scattered on the ground, you notice very soon that they form into lines. For example see...

I just checked apogee and they are selling these old 8" LX10 scopes at a bargain US900+ for the normal one and $1100 for the UHTC version. This is the only...

I have a few astronomy questions I need answering in order to help with a hypothetical problem. I need to know the closest place (to the Earth) I can get hold...

Hello, At school we we were given the assignment to create a 3D model of a constellation. We were quite lucky as we got the constellation of Orion. As all...

Star light is just a pin hole. Would it be an advantage to just make a pin hole for the viewing star's light to shine through before doing anything else? ...

The sun's atmosphere is much hotter than its surface. I was told that is the result from continual explosions created by magnetic fields.Again the Curie...

Hi, I am in Hendersonville, NC. At 9:35 this PM I looked at about 35 degrees up in a West facing direction, and there is what appears to be a normal star,...

Has anybody had any experience with the above scope. Is it any good or is it considered rubbish? Thanks in advance

If I took off from earth and was traveling at the speed of light, how long would it take to get to the edge of the sun's gravity well or gravitational...

It keeps filling up with junk mail. Its the same mail over and over,and this mail has no true address. Keeps my mail box from getting any more mail. When I...

Hope I'm right in saying Pluto is a solid ice(water) planet for the most part??? Is its Moon made out of the same material? Do they both have a nice round...

Nature in creating matter creates anti-matter at the same instant. However man has a theory that nature had more left over matter after the BB than...