EarthSky’s Kelly Kizer Whitt said, “In January 2025, I was hiking in Haleakala National Park in Hawaii when I saw my 1st and 2nd-ever fogbows.” A fogbow is also a white rainbow or ghost rainbow. Watch Kelly’s video here or on YouTube. A fogbow, or white rainbow Have you ever seen a white rainbow? These … Read more
There are a lot of ways for dead stars to blow their tops. Astronomers discovered this explosive diversity when they assessed 3,628 exploding white dwarfs during a next-generation sky survey conducted using the Zwicky Transient Facility (ZTF) between March 2018 and December 2020. That means that this dataset of nearby supernovas is several times larger … Read more
White dwarfs are the remnants of once brilliant main sequence stars like our Sun. They’re extremely dense and no longer perform any fusion. The light they radiate is from remnant heat only. Astronomers have doubted that white dwarfs could host habitable planets, partly because of the tumultuous path they follow to become white dwarfs, but … Read more
White dwarfs are giving up more of their secrets, with the discovery that the hotter they are, the puffier their outer layers are. While this finding may sound immaterial, understanding the structure of white dwarfs could ultimately prove key in discovering what mysterious dark matter is made from. White dwarfs are the core remains of … Read more