The Southern African Large Telescope (SALT) celebrates 20 years of observing the sky. SALT is the largest optical telescope ...

Well, Comet Lemmon finally passed its closest approach to the Sun and is now heading back into the outskirts of the solar ...

Interstellar visitor 3I/ATLAS is accelerating without a comet tail, sparking a fierce debate: Is it a strange natural wonder, ...

A rare interstellar comet, 3I/ATLAS, will grace the eastern pre-dawn sky on November 11, 2025. Discovered in July 2025, this celestial visitor, only the third of its kind, will require a telescope for ...

Active galactic nucleus (AGN) black hole 10 billion light-years away, J2245+3743, made the biggest and brightest flare ever ...

Back on planet Earth, and deep inside a pitch-black, sulfuric cave on the Albanian-Greek border, we reported on a study that ...

After briefly escaping from Earth's view during a (very) close approach to the sun on Oct. 30, Comet 3I/ATLAS can finally be ...

Although I've spent decades as a deep-sky observer, I've always been fascinated by the Sun. Solar observing offers clear advantages: It's accessible anywhere, immune to light pollution, and doesn't ...

The comet is the third interstellar object from deep space ever recorded to pass through Earth’s solar system.

NASA confirms 3I/ATLAS visible tonight — learn when and where to spot the rare interstellar comet lighting up Earth's skies ...

Astrophotographer Mark Johnstron captured a mesmerizing cloud of hydrogen plasma dancing above the sun's limb in this ...

Having made its closest approach to the sun on Wednesday October 29, comet 3I/ATLAS will soon be visible from Earth ...