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seen Oct 21 at 13:54

Software Recommendations moderator.

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Mar
1
comment Why do sunspots appear dark?
That would be a neat picture. I'll look for some, although I somewhat doubt I'll find any.
Jan
9
comment Is the moon moving further away from Earth and closer to the Sun? Why?
@frodeborli I'm pretty sure you're confused - to the best of our knowledge, energy doesn't cause gravity. If you can show me a source that says otherwise, though, I'm always open to new ideas.
Oct
17
comment Age of the universe
We don't know. Some certainly think so. Very different things.
Oct
10
comment How can I create tracks of the planet's orbits on my computer?
Are you looking to create new data (make your own observations, etc) or browse historical/current data from other people?
Oct
9
comment Should I focus more on Aperture or Focal Length for a telescope?
Could you add some more detail which might be more helpful to future people to your answer? As it stands, this reads more like a personal story than an answer.
Sep
30
comment How far apart is the dust in the Sombrero Galaxy's dust lane?
Note the 'feels like' - I know it's incorrect, but the dust certainly doesn't look very dense.
Sep
30
comment What is the predominant element in the dust of the Sombrero Galaxy?
Follow-up question: astronomy.stackexchange.com/questions/421/…
Sep
25
comment If nothing travels at the speed of light, except light, how can a black hole also pull light into itself?
@Jeremy Currently it is beleived that nothing can travel faster than life, so sometimes misconceptions like this one occure.
Sep
25
comment If nothing travels at the speed of light, except light, how can a black hole also pull light into itself?
No - it's changing the fabric along which the light travels, just like a ball rolling around on a blanket. It might start out going straight, but if there is a depression in the blanket and the ball passes toward it, the ball will change course. A black hole creates a 'mega-depression'.
Sep
25
comment If nothing travels at the speed of light, except light, how can a black hole also pull light into itself?
@Timtech Gravity is a strange thing - it warps the spacetime fabric, 'funneling' the light into itself. It is changing the very path of the light.
Sep
24
comment Do all the objects in the universe exert force on all other objects?
@Timtech Yes - every atom (that we know of) does.
Sep
24
comment How many stars can stay close to each other without collapsing?
Sure, if you could get them to orbit eachother.
Sep
24
comment What are the differences between a Black Hole and a Supermassive Black Hole
The density is infinite - not the mass, IIRC.