Scientists were surprised to note that 3I/ATLAS brightened much faster than they anticipated during its perihelion last week.

Water discoveries in space happen all the time. But this one’s actually a big deal, and not just because some scientists got excited (though they absolutely did). NASA’s Neil Gehrels Swift Observatory ...

Their design includes instruments to analyze a comet’s surface, internal structure and the glowing coma — the cloud of gas that forms as a comet’s ice evaporates near the Sun. Understanding an ...