"We were very surprised to see that the same tiny plasma jets appear to be driving both the fast and the slow solar wind." ...

"We are the first mission to be able to track space weather events in three dimensions routinely across the solar system." ...

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

Mercury is the closest planet to the sun, followed by Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Mercury orbits ...

Four planets will be widely visible to the naked eye through part of February, but calling them a 'planetary alignment' may ...

Solar Orbiter has revealed that tiny, hair-like jets in the Sun’s coronal holes are responsible for both fast and slow solar ...

The above 40-second video is sped-up footage of the new-found jets flashing briefly near the Sun’s south pole. In reality, ...

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

What will happen to the solar system when the Milky Way completes the merger with the Andromeda Galaxy? Bryan ...