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

The simulation of the Solar System that came the closest to the observation was the presence of a small planet, between the ...

Harvard researcher Avi Loeb says comet 3I/ATLAS weighs 33 billion tons and spans 3.1 miles, making it far larger than ...

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

Astronomer Gianluca Masi and his Virtual Telescope Project will host a special livestream on Oct. 20 beginning at 1:30 p.m.

The James Webb Telescope captures the beginning of planetary formation around the young star HOPS-315 for the first time.

For the first time, astronomers have witnessed the early stages of planet formation around a distant young star, HOPS-315, ...

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

Ryugu’s samples reveal that water activity on asteroids lasted far longer than scientists thought, possibly reshaping ...

Millions of years before blue oceans and wandering continents, the Earth in its early days was a molten, tumultuous planet — ...

Researchers discover hidden solar tornadoes that can disrupt Earth's systems - revealing why current space weather warnings ...

Space weather isn’t referring to rain clouds that float through the galaxy. Instead, it’s caused by massive explosions of ...