At 20:02 UTC (4:02 PM, EDT) today, the Autumnal Equinox occurs, the Astronomical beginning of Autumn. This is the second time this year, and every year, that marks the date and time when there are equal hours of daylight and darkness, the first being the Vernal Equinox, the Astronomical beginning of Spring. Today the sun transits the … More 2017 Autumnal Equinox Today!
Originally posted on Matthew Wright:
Albert Einstein once explained that nuclear weapons changed everything – except the way we think. He was right, of course. That worries me. There’s been a lot of talk about rogue-state nuclear weapons of late. A war using such appalling devices seems a real possibility – more so than during…
September 7, 2017 After Cassini: Pondering the Saturn Mission’s Legacy Cassini’s discoveries are feeding forward into future exploration of the solar system. Credit: NASA/JPL-Caltech/Space Science Institute › Full image and caption (Author’s note: The Cassini orbiter is scheduled to be deorbited and plunge into Saturn’s cloud tops this Friday, September 15 at 4:55 AM, PDT. … More The Cassini-Huygens Legacy of Science and Discovery at Saturn