An analysis of the cosmic microwave background revealed bright spots, possible imprints left when an alternate universe bumped ours shortly after the Big Bang.
UPDATE NOVEMBER 30, 2015: Comet C/2013 US10 (Catalina) will gradually become easier to spot this week, but still requires optical aid. Some observers are reporting that the comet is becoming visible in binoculars. If you have not seen Comet Catalina, the mornings ahead should provide a good opportunity to have a first glimpse at this celestial visitor. Current magnitude ranges between 6.5 and 6.1 (very close to the limit of viewing with the unaided eye), and may improve.
The global average surface temperature in 2015 is likely to be the warmest on record and to reach the symbolic and significant milestone of 1° Celsius above the pre-industrial era, according to a new report by the World Meteorological Organization (WMO). It released a new report on November 25, 2015, as world leaders converged in Paris for the 2015 Paris Climate Conference (COP21). The WMO says the high temps in 2015 are likely due to a combination of the overall trend of global warming, plus the strong ongoing El Niño.
Scientists have detected accelerated ice loss at Zachariae Isstrom, a large glacier located in northeastern Greenland. The accelerated period of ice loss began in 2012, these scientists say. They believe it is being driven by warming air and ocean temperatures. Water from the melting glacier is expected to contribute to the ongoing rise in sea levels.
This new and beautiful video – part of project Skyglow – features a voiceover by the late Carl Sagan from a section of his book Pale Blue Dot.
Interested in astronomy, but not sure where to begin? Seek out your local astronomy club, a roomful of willing and able amateur astronomers, whose telescopes may offer your first glimpse of the cosmos. The Astronomical League, an umbrella organization of 240 amateur astronomy clubs and societies in the U.S., helps us create and maintain the list of events on this page.
The global nature of science – and challenge of global communications – will bring together university students in Indonesia, Japan and elsewhere across the world during a 2016 solar eclipse.
Matt Dieterich submitted this composite image to EarthSky this week. It’s from the 2015 Perseid meteor shower in August, typically one of the year’s best showers. Thanks, Matt!
If you could see stars in the daytime, you’d see the sun shining in front of the border of the constellations Ophiuchus and Scorpius today. The sun crosses a constellation boundary, into Ophiuchus, on November 30, 2015, at 7 a.m. CST in the central U.S. That’s 13 hours UTC. The sun always passes in front of Ophiuchus around now. That’s why some call Ophiuchus an unofficial member of the Zodiac.
Our friend Josh Blash submitted this photo to EarthSky this weekend. It’s Friday night’s moon, next to the famous Griffith Observatory in Los Angeles.