On July 30, 1610, the famous astronomer Galileo Galilei became the first to observe rings around the planet Saturn. Shortly after the telescope was invented in 1608, Galileo peered out into the solar ...

Scientists estimate the object to be more than 12-miles-wide, speeding at 37 miles-per-second, relative to the sun.

Harvard astrophysicist Avi Loeb has cowritten a research paper speculating whether the comet 3I/ATLAS is in fact "hostile" ...

Simply put, the moon is useful in a way that no other astronomical object is. That's because it's the nearest, most easily ...

In a mission that changed our understanding of gas giants, NASA’s Galileo spacecraft made history not just in orbit but also in its dramatic descent into Jupiter’s atmosphere. Launched in October 1989 ...

This rare planetary alignment will be visible from August 10 but will be best viewed later in the month. Here’s everything ...

On August 10, six planets — Mercury, Venus, Jupiter, Saturn, Uranus, and Neptune — will line up in an arc in the night sky.

A controversial new paper questions whether the interstellar object 3I/ATLAS is a potentially dangerous alien probe, similar ...

Your experience of time is relative because it depends on motion – more specifically, your speed and acceleration.

For centuries, humanity believed that Earth was the center of the universe, a view championed by Aristotle and Ptolemy. But with Galileo's groundbreaking observations in the 1600s, the idea of a ...