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
Longstanding mystery solved! New research shows that – just as lobsters, turtles and some birds do – sharks navigate using Earth’s magnetic field,
Biological oceanographer Bryan Keller is the lead author of a paper reporting how sharks use Earth's magnetic field to navigate large distances. Image via Colby Griffiths/ Save Our Seas Foundation
Now 8 years into its travels in the deep reaches of space between the stars, Voyager 1 has detected a faint, low-level hum. It stems from the vibration of the plasma, or ionized gas, in interstellar space.
In 2012, Voyager 1 sailed out of our solar system when it crossed the heliopause into interstellar space. Image via NASA.