Climatologists at NOAA have released updated climate “normals.” They explain what “normal” means, how our U.S. climate normals have changed, and how to best make sense of them.
Arcturus is the 4th brightest star in the sky and the brightest star north of the celestial equator. One of the easiest stars to locate due to its position off the handle of the Big Dipper, you can look for it on spring evenings in the Northern Hemisphere.
The star Arcturus is easy to identify. Use the Big Dipper to "follow the arc to Arcturus" and "drive a spike to Spica." Read more
A nova that first brightened in March of 2021 has now flared bright enough to be seen without binoculars or a telescope.
View at EarthSky Community Photos. | Tara Mostofi in California and Alexandru Barbovschi in Moldova captured this photo of a nova in Cassiopeia on March 21, 2021. wrote: Alexandru wrote "In the light of the recent news about a nova going off in the Cassiopeia constellation, a desire to photograph it appeared. Sadly, weather is not permitting currently in the Republic of Moldova. So I asked my good friend living in California, Tara Mostofi, to shoot it for me and I would take care of processing it. We have very similar setups (same mount and OTA, but different cameras), which means that I would get a similar result. Only 14 proper light frames were collected, but it was enough to create a nice picture and actually capture the nova! It's not our first collaboration project and it feels exciting to know that even bad weather can be overcome." Thank you, Alexandru and Tara!
Scientists call it a “diffuse auroral eraser.” That’s because this newly named aurora first appears as a bright stripe over a diffuse auroral background. Then, when it disappears, it scrubs out the faint auroral light behind it.
Aurora borealis. Image via Vincent Guth/ Unsplash