Briefly: Here's a fascinating graphic comparison of the mirrors of optical telescopes since the Yerkes Observatory -- an 1893 40-inch refractor in Williams Bay, Wisconsin -- to the largest of them all, the 39m European Extremely Large Telescope at Cerro Armazones in the Atacama Desert, Chile.
Size Comparison Of Optical Telescopes From 1893 To 2022
Trending Stories Right Now
It's been nearly 13 years since Doctor Who returned from cancellation, which means it's also been nearly 13 years since Christopher Eccleston made his shock exit as the Ninth Doctor. In the years since Eccleston has kept mostly quiet about why he left the show after just one season, but he's now revealed the full extent of what caused his departure.
Cockroaches have been one of humanity's most unwanted, yet admirably persistent, roommates for thousands of years. But despite our reluctant intimacy, there's still a lot we don't understand about these insects. A new study, published this week in Nature Communication, unpacks the genes that make roaches tick - and helps explain why they're so damn hard to get rid of.