This summer, scientists spotted an incredibly rare visitor to Earth’s solar system—a comet, now known as 3I/ATLAS, that entered our solar system from the galaxy beyond and is zipping past the sun at a ...

Nov. 12 (UPI) --Private space company Blue Origin canceled Wednesday's planned Mars-bound launch from Florida of its ESCAPADE craft for the second time due to increased solar flare activity. The ...

Mars didn’t always look like the barren world we see today. Over billions of years, the Sun’s solar wind stripped away much of its atmosphere, helping transform it from a warmer, wetter planet into a ...