All questions

Does light accelerate when approaching the edge of a black hole?
In an expanding universe, why are Andromeda and the Milky Way destined to collide?
What are the degree requirements and verification required to become an astronomer?
What proof do you have that planets are made from gas and dust?
Does a sunset in the west and a moonrise in the east ever happen at exactly the same time?
How do astronomers zero in on the spectrum of a single star?
Why do comets not get captured by Earth's gravity during a close flyby?
What is the difference between "twin suns" and "binary suns"?
Does time stand still inside a black hole?
Does the matter inside a black hole have temperature and density?
Do single stars tend to rotate in the same direction as the Sun and/or the Galaxy?
Why does only one side of the Moon face the Earth?
Is there public domain software to calculate the orbit of a spacecraft?
How is HETDEX different from other dark energy surveys?
How likely is it that the Universe is closed, rather than flat?
Immediately after the Big Bang, did light stop at the edge of the Universe?
Is Betelgeuse shrinking?
If the Moon was formed out of a giant collision, why is there no ring of debris surrounding Earth?
Why does the atmosphere of Pluto have a blue tint?
Can we find exoplanets (and possibly extraterrestrial life) by beaming low-frequency waves towards them?
Does the wavelength of a photon change over its travel through intergalactic space?
How much of the Sun has been used up?
About 100 tons of cosmic dust fall on the Earth every day. Will this cause Earth's orbit to change over time?
What is the evidence that early astronomers used to show that the Earth is turning on its axis?
Is there a way to provide a magnetic field for Mars?
How long does it take for stars to explode?
How does the direction of the moonrise change?
How old are small stars?
Why is light traveling at the specific speed of 186,000 miles/sec?
Is space expanding faster than the speed of light?
Is the Sun yellow or white?
Is Jupiter a failed star?
Is there is a policy to not send probes anywhere that conditions might support life?
How long does it take for a planet to be born?
Is Pluto still a planet?
Are astronomers convinced that dark matter is the answer?
Can a hypothetical Planet X whip around from behind the Sun in a 3600-years orbit?
What is the hierarchy of structures in the Universe?
Is it possible to colonize and terraform Mars at the same time?
When I look up and see the Milky Way galaxy, am I looking towards the center of the galaxy or towards outer space?
How is the HET uniquely capable of studying dark matter and dark energy?
Is it possible to see the Andromeda galaxy with the unaided eye when in dark sky country within Texas?
Would the constellations we see from Earth look any different from other planets in our solar system?
How many years does it take to become an Astronomer in college? Does one need a doctoral degree?