Ask An Astronomer!

The title says it all. You can ask any question about space and astronomy. A professional astronomer will respond to your e-mail.

Ask your question!

The astronomers.

These are the people who will respond to your question.

Diana Valencia

Diana Valencia is an Assistant Professor at the University of Toronto and interested in the composition and structure of super-Earths and mini-Neptunes.

Geoffroy Lesur

Geoffroy Lesur is a researcher at the Institute of Planetology and Astrophysics of Grenoble. He is interested in planet formation and hydrodynamics.

Erika Nesvold

Erika Nesvold is doing research on debris disks and exoplanets at NASA/Goddard Space Flight Center.

Hanno Rein

Hanno Rein is an Assistant Professor at the University of Toronto and works on extra-solar planets and Saturn's rings.

Wladimir Lyra

Wladimir Lyra is a Sagan Fellow at the California Institute of Technology. He simulates the Solar Nebula, trying to answer a very ancient question: How did the Earth come to be?

Dave Spiegel

Dave Spiegel works at the Institute for Advanced Study in Princeton and is interested in planets and brown dwarfs.

Christopher Berry

Christopher Berry is interested in gravity and researches what we could learn about object like black holes using gravitational waves.

Emily Rice

Emily Rice is a research associate at the American Museum of Natural History and an Assistant Professor at CUNY. She works on observations and models of very low mass stars.

Ask your question!

You can ask us any question about planets, galaxies or the universe. We will get back to you as quickly as possible (we can't be faster than the speed of light).

By submitting your question you acknowledge that we might share your question with others. We will not send you any emails besides those directly related to answering your question. If you are having trouble with this webform you can also send us questions per e-mail.

The archive.

See what other people have asked, but don't forget to ask your own question!

Is this for real?

Yes! If you ask decent question, you will get a decent reply. You might be wondering why we are doing this, answering random questions from random people? Because we love answering questions! That's what we do for a living: Solving the mysteries of the universe. If you are an astronomer and would like to take part, please e-mail Hanno Rein.