He wasn't wrong—the sun is 99.8 percent of the mass of the solar system. But what is that giant ball of fire in the sky? How ...

This isotope is found at a ratio of about one per 2,500 helium-4 ions, the latter being the common version of helium.

A twisting, whirling streamer of plasma escaping the sun in the aftermath of a coronal mass ejection (CME) has been captured on video by the European Space Agency's Solar Orbiter, and could provide ...

A group of comets with unexplained movements presents a quandary D avide Farnocchia hunts down and tracks asteroids, and several years ago he saw something he couldn’t explain. Farnocchia works at ...

The researchers reached the conclusion by studying 7,982 meteoroid trajectories and 540 potential meteorite falls.

In the solar system system there are certainly two examples of this condition, and no other explanation of it has been advanced. Mercury always keeps the same face towards the sun, and the moon ...

The Bay Sages heard from the Delta Astronomical Society (DAS) during its monthly meeting on Thursday. DAS Newsletter Editor ...

Mar. 17, 2025 — The James Webb Space Telescope has captured its first direct images of carbon dioxide in a planet outside the solar system in HR 8799, a multiplanet ... Combination of Cosmic ...