Harvard astronomer Avi Loeb has argued at length that 3I/ATLAS — the third-ever interstellar object ever detected, currently screaming through the solar system at incredible speed — could be an enormous alien spacecraft measuring miles across.

The widely talked about Comet 3I/ATLAS will pass by the sun on Thursday, but it will be December before stargazers can get a glimpse of the object.

Astronomers have discovered asteroid 2025 SC79, a skyscraper-sized space rock orbiting the sun in just 128 days. the second-fastest known.

Avi Loeb suggested that if 3I/ATLAS is a spacecraft, it may use its proximity to the Sun's powerful gravitational pull while hidden from us.

NOAA's CCOR-1 coronagraph captured the blast that showed the sun's raw power in action.

The study of young stars like EK Draconis has offered fresh insights into the violent activity of our Sun in its youth. By observingcoronal mass ejections (CMEs) from these stars, scientists aim to understand how these early solar outbursts might have influenced the development of life on Earth.

Why do all planets in our solar system orbit the Sun the same way? This documentary unravels the cosmic forces, from the solar system’s violent birth to the hidden laws of physics, that keep the planets moving in perfect order.

A scientist spotted an asteroid hiding in the sun's glare that orbits the sun in just 128 days, making it the second fastest known asteroid in the solar system.