Harvard astronomer Avi Loeb criticized NASA for repeating the "official mantra that 3I/ATLAS is a natural comet." ...

During the weekend, the orbits of Earth and Saturn will combine to create an interplanetary optical illusion for anyone with ...

NASA has finally published several observations of interstellar comet 3I/ATLAS that were taken during the long government ...

Looking for a sky event this week? Check out our full Sky This Week column. November 20: Io and Callisto cross Jupiter The morning begins with Callisto transiting the disk of Jupiter, starting at 5:53 ...

Sky This Week is brought to you in part by Celestron. Friday, November 21 The solar system's seventh planet, the ice giant Uranus, reaches opposition this morning at 7 A.M. EST among the stars of ...

In 2026, a first-of-its-kind spacecraft—launched on a rocket dropped out of a plane—will attempt to save NASA’s Swift ...

While the feds idled, an interstellar object known as 3I/ATLAS was barnstorming the solar system, at a speed that reached 153 ...

November is the best month of 2025 to catch a glimpse of the distant ice giant Uranus as it shines at opposition, though ...

Interstellar comet 3I/ATLAS has spent the last several months on a tour of our solar system. NASA spacecraft and telescopes ...

NASA is unveiling close-up pictures of the interstellar comet that's making a quick one-and-done tour of our solar system.

(THE CONVERSATION) When astronomers search for planets that could host liquid water on their surface, they start by looking at a star’s habitable zone. Water is a key ingredient for life, and on a ...

Christmas leaves the imagination with snow and wintery landscapes, but it is also an opportunity to visit some of Greece’s most picturesque and idyllic ...