Look up in April 2026 for Venus and Jupiter, the Lyrids peak, zodiacal light after the new moon, and a short window to catch a planet parade.

The number 45 matters less than what it represents: the shift from open-ended discovery to structured search, and from chance to strategy. Regardless of the final number, we are about to learn more about the existence of biology on other worlds, and that is exciting.

The decades since scientists confirmed the first planet around another star have been rich in discovery, but it’s rare to see a new solar system as it forms

Why doesn't Astronomy magazine recognize Messier 110? Keith LankfordHarvest, Alabama Amateur astronomers dubbed this object M110 in the 1960s, so we choose not to include it. Charles Messier's list

Introduction to Astronomy is a college class usually filled with excitement and a lot of questions about outer space. Questions like: What are black holes? Are there planets out there that are habitable? Why is Venus's climate so different from Earth's ...

Stellar streams are trails of stars that astronomers can study to solve mysteries about the history of our Milky Way galaxy and, potentially, the dark matter that helps shape the cosmos despite eluding direct observation.

Cleostratus was a truly pioneering Greek astronomer who lived on the small Aegean island of Tenedos in the 6th century BC.