January 28, 1986. On today’s date 30 years ago, the Space Shuttle Challenger (mission STS-51-L) exploded and broke apart 73 seconds into its flight, after an O-ring seal in its right solid rocket booster (SRB) failed at liftoff. The explosion led to the deaths of all seven Challenger crew members.
EarthSky News with Deborah Byrd for January 28, 2016. Mars will be awesome in 2016. The loneliest exoplanet. Dark matter linked to galaxy clusters’ internal structure. A tribute to fallen NASA heroes.
These colorful rings of a lunar corona appear when we see the moon through a very thin cloud of similarly-sized water droplets.
Dave Petley at the blog of the American Geophysical Union (AGU) nominates this landslide footage as the greatest-ever debris flow video. He wrote:
It starts slowly, but hang in there!
A new study published this week in Physical Review Letters suggests that a galaxy’s cluster’s internal structure is linked to its dark matter environment. It’s the first time that a property besides the mass of a galaxy cluster has been linked with surrounding dark matter.
Claims about new planets that turned out to be wrong – and why ‘Planet Nine’ may be different.
An apparently fake image ran in APOD a few days ago, but this video of an ISS transit across the face of Saturn looks real.
Did you know that auroras emit X-rays? This new image from ESA, released January 26, 2016, shows the X-ray component of an aurora caught by accident by the Integral space observatory in late 2015.
The American Meteor Society has over 100 reports of a bright meteor seen in broad daylight over southeastern U.S. on Sunday. How to report it, if you saw it, here.
The exoplanet labeled 2MASS J2126 has the widest orbit of any planet ever found. Its “year” is nearly 1 million Earth-years long.