It's
Ada Lovelace day! If you look up in the sky tonight, take a moment to thank
Henrietta Swan Leavitt for all her hard work. While slaving away as a poorly-paid "computer", she formulated a theory about the relationship between period and absolute magnitude of
Cepheid variable stars, which was the key to figuring out the distances to other galaxies. She hasn't got a famous space telescope named after her, or a Nobel Prize, but she does have a
crater on the moon, and an
asteroid.
posted 9:49 AM
If you like red grapefruit, then you have
radiation to thank.
posted 6:51 PM
On April 4th the Hubble will take a look at
Hanny's Voorwerp.
(Via
@Nancy_A)
posted 6:58 PM
