astronomer

For one astronomer at Northern Arizona University's Department of Astronomy and Planetary Science, the answer is simple: start building better models.

This discovery gives astronomers important clues about how rogue planets form.

For more than a century and a half, astronomers have been captivated by the distant galaxy OJ 287, located about five billion light years from Earth.

Since then, astronomers have used ground-based and space telescopes to monitor its progress and discover more about it.

When astronomers use telescopes to look at galaxies in space, they find some that are close by and further away—that is, some younger and some very much older.