The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Astronomers discovered the gas giant planet — dubbed a "hot Jupiter " — in 2016, but have continued to investigate this ...

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

Mercury takes only 88 Earth days to orbit the sun.

While the composition of gas and dust in a molecular cloud is fairly uniform, everything changes once a star begins to form.

The OSIRIS-REx mission returned to the sample to Earth in September of 2023, and these studies show that it contains amino ...

While this parade of planets look to our eyes to be huddled in the evening sky, they are of course spread out across a vast chasm of space across the solar system, separated from each other by ...

Baker said that there are other astronomical events that may be more interesting than the parade of planets. Baker said Mars ...

When you first learned about the Solar System, you probably saw diagrams that made it look orderly, with planets arranged in ...

Tonight and throughout January, stargazers can see a planetary alignment in the night sky or what some are calling a ...

A new study claims it is possible an "alien visitor" could have warped our solar system during its earliest years.