Most videos on book cover designer Elisha Zepeda’s TikTok account have a similar format: he gets an assignment from a publisher, crafts several options, gets feedback, makes some tweaks, and ...

It is a Mira-type variable, a class of variable stars named after Mira in Cetus, the first such star of this type ever identified. Discovered in 1782, astronomers estimate R Leo is less than 300 ...