Earth and Mars are constantly moving, but don’t stay a constant distance apart. Plus, spacecraft don’t travel in a straight line to their destination.

Artemis 2 will send a crew of four astronauts on a 10-day mission around the Moon. Here is the mission's flight path, step by ...

A new study shows that the event that wiped out the dinosaurs caused only a small drop in shark and ray species at the same ...

This faraway, ancient ball of stars may have been captured from another galaxy that passed too close to the Milky Way.

Though NASA was optimistic about launching four astronauts on a trip around the moon as early as Friday, the space agency is now looking at March after complications during a key preflight test. As it ...

The bright star Sirius dominates the southern sky late this evening, blazing high in the south around 10 P.M. local time. You can use this sparkling star to point your way to the open cluster M47 in ...

Our universe is filled with particles, such as electrons and protons, which make up all the stuff on our planet and beyond: animals, plants, people, planets, asteroids, stars, gas clouds, and galaxies ...

A few days ago, longtime Astronomy magazine contributor Chris Schur sent me the image you see here. It shows the famous Double Cluster in Perseus, also known as NGC 869 and NGC 884. Most images of ...

The Moon passes 4° north of Jupiter this evening at 9 P.M. EST. The pair is visible most of the night in the central region of Gemini. Early in the evening, the nearly Full Moon hangs to the upper ...

Their new study shows that Earth’s massive drop in temperature after the dinosaurs went extinct could have been caused by a large drop in calcium levels in the ocean. The study showed that the ...