This ancient megalithic monument - dating from between 2000-3000 BC - was excavated and studied in the 1920s, drowned in the 1960s, and dry again in 2019. Read more. Image via 1080 Wildlife Productions/AtlasObscura.
The Dolmen of Guadalperal - sometimes called the Spanish Stonehenge - is a 7,000-year-old circle of 150 upright stones, now back on dry land in western Spain after 50 years underwater. Read more.
For decades, astronomical theorists have told us that a black hole's powerful gravity would warp the space around it. This new visualization from NASA's Goddard Space Flight Center is the best yet. See it here.
Today's sky chart shows you how to star-hop to the Andromeda galaxy - the large spiral galaxy next-door to our Milky Way - from the Great Square of Pegasus. Read more.
View at EarthSky Community Photos. | Our friend Steve Scanlon has captured many glorious beach photos. This one is from Thursday morning - September 26 - the old moon - a waning crescent moon rising near the sunrise - ascending over the Atlantic Ocean at Monmouth Beach, New Jersey. Visit Steve Scanlon on Facebook.
