In what we can only interpret as a show of solidarity for the Solar System's beleaguered dwarf planet Pluto, the Sun put its heart prominently on its sleeve atmosphere. On the side of the Sun facing ...

People always want to know what will happen to Earth when the sun eventually swells up as a red giant. For one thing, the expanding sun will turn the inner planets into cinders. It will almost ...

When the Sun becomes a red giant, will the outer planets and moons become more temperate and conducive to Earth-like life? Terrence A. Murray Cincinnati, Ohio When the Sun runs out of hydrogen fuel ...

A giant hole has opened in the atmosphere of the Sun, and it's blasting out a high-speed wind that is directed right at Earth. The incoming blast of solar particles is worth getting excited about: ...

New telescope images show that the interstellar comet 3I/ATLAS is shooting a giant jet of gas and dust toward the sun. This ...