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How do we know that the Universe is accelerating?
Did stars form during the Big Bang?
Why is Mars red?
Why do the outer gas giant planets rotate faster than the inner planets?
How do we know that the Universe is accelerating?
Why does the Moon look bigger?
Do all comets approach the Sun along the plane of the ecliptic?
Did space exist before the Big Bang?
Can you deflect an asteroid with vibrations?
Can we reveal the actual optical disk of another star than our sun's?
What is the typical day of an astronomer like?
Did I see a supernova?
How can X-rays escape the gravity of black holes?
How large is our solar system is when compared to other known solar sytems?
What part of the Earth is nearest to the path of the moon?
Do white holes exist and if they do can we see them?
Why don't all planets have one moon like the earth? How do other planets acquire more than one moon?
If the observable universe is analogous to a hollow plastic ball, then how thick is the plastic?
Career in Astronomy interview
How long woud it take to get Alpha Centauri?
How long does it take for a white dwarf to cool?
How do you start a career in finding comets and asteroids?
At what point is the redness of the sunset no longer visible on the horizon?
How can I visualize the movement of the Moon on the sky?
Why does the rate of change of day length vary and why it is greatest at the equinox?
What is Planet X? Is it true it has been observed/detected?
What is the best landing place for a rover on Mars?
Why do some planets have reverse rotation?
What is the easiest way to measure the distance between the earth and the sun?
Is Saturn the only planet that has rings?
Can there be another planet in our solar system in the same orbit as earth but on the opposite side of the sun?
How is it possible to look back and see the birth of the universe?
How can astronomers say that the universe is expanding without knowing where the boundaries of the universe are?
What would happen if I put my arm out in space without a space suit?
If your skin was exposed in space and you bled would your blood be blue from lack of oxygen?
How long would it take us to travel to Alpha Centauri?
Why can't we go faster than the speed of light? Can we ever colonize other planets?
What are some major challenges of human space exploration?
What happens to "dead" satellites orbiting the Earth?
What kind of damage do solar storms cause to satellites?
Exactly how does a comet's tail form? Why doesn't a comet's gravity hold onto the gas?
If the Universe is expanding and galaxies are rushing away from one another, why are the galaxies in the Local Group not flying apart?
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Laurie Hatch
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