The moon has a tail, and Earth wears it like a scarf once a month

Like a comet soaring through the cosmos, the moon is followed by a slender tail of irradiated matter — and Earth passes directly through it once a month. via Technology and News Today https://www.livescience.com/moon-has-a-sodium-tail.html

Modeling the bizarre remnants of a supernova

Modeling the bizarre remnants of a supernova

When stars of a certain large size and energy run out of fuel, the result is a supernova explosion that can be spotted with the naked eye just once in a lifetime. Some leave behind a relatively spherical supernova remnant.

Continue Reading . . . https://www.engadget.com/mapping-the-jellyfish-nebula-supernova-remnant-133619763.html