Ask an Astronomer

Curious about Astronomy? Have a burning question about the Universe that you'd like answered? Ask us! We have answered 24 questions so far.

We are a team of graduate students, postdocs, researchers and faculty affiliated with the University of Texas and McDonald Observatory. We welcome questions about Astronomy from K-12 students, teachers and the general public!

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Recent questions

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?
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