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" ...

Abraham Loeb has theorized that the recently discovered interstellar object 3I/ATLAS could be alien technology, but ASU's ...

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

Jupiter's four Galilean moons will line up in front of Jupiter in the early morning sky on Aug. 8. The predawn hours of Aug. 8 present a perfect opportunity to see Jupiter's four largest moons line up ...

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

Avi Loeb, the chair of the astronomy department at Harvard, has suggested that a Manhattan-sized interstellar object, which ...

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

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 ...