A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...

Using JWST and ALMA data, astronomers have spotted a superlong and narrow 'galactic contrail,' possibly produced by a black ...

Interstellar comet 3I/ATLAS has caught the interest of astronomers and amateur enthusiasts alike as just the third object to ...

The European Space Agency also hoped to observe the interstellar object during its close approach to Mars using two ...

It came from another star and passed through our solar system at impossible speed. Astronomers scrambled to study it, but it ...

A mysterious space object named 2023 KQ14, nicknamed “Ammonite,” challenges theories about the mysterious and possible Planet ...

The object was detected not through any light it emits but by the subtle way its gravity bends light around it, a phenomenon ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

The mysterious interstellar comet 3I/ATLAS is absolutely blasting out water at a staggering rate, astronomers found.

The interstellar object hurtling toward the inner solar system, where Earth is located, is much larger than previously ...

A massive comet traveling through the solar system is much larger than previously thought and could be a remnant of alien ...

Need a refresher about 3I/ATLAS? Here's everything to know about the interstellar object, including when the latest ...