Oct 23 - Here's Some Good News

October 23 Here's Some Good News by:

According to a new study, the western South Atlantic humpback population has grown to 25,000. Researchers believe this estimate is close to pre-whaling numbers. Read more. Image via iStock.com/Martin Hristov.

Humpback whale population on the rise After a near-miss with extinction, a population of humpback whales in the South Atlantic has rebounded. Read more. 2019 ozone hole smallest since its discovery Thanks to abnormal weather patterns in the upper atmosphere over Antarctica, this year's ozone hole is the smallest it’s been since scientists first observed it in 1982. That’s according to a NASA and NOAA report released on Monday. Read more and watch a video. Ice cliffs in Antarctica might not contribute to extreme sea-level rise in this century A 2016 study suggested tall ice cliffs along Antarctica's coast might collapse rapidly under their own weight and contribute to more than 6 feet (2 meters) of sea-level rise by 2100. Now, MIT researchers have found this prediction may be overestimated. Read more.

EarthSky lunar calendars are back in stock We're guaranteed to sell out, get one while you can! Your support means the world to us and allows us to keep going. Purchase here.

See moon, Leo, and Mars before daybreak These next several mornings, you can use the lit side of the waning crescent moon to envision the ecliptic and locate the planet Mars, which is just now returning to the east before sunrise. The waning crescent points to Mars on October 23, 24 and 25. On October 26, look for the moon to swing close to Mars on the sky's dome. Read more. Want a view specific to your location? Try Stellarium.

Tycho supernova Tycho - first observed in 1572 - is the remnant of a supernova, located 8,000-9,800 light-years from Earth in the constellation Cassiopeia the Queen. This latest image of Tycho, from the Chandra X-ray Observatory, reveals an intriguing pattern of bright clumps and fainter areas. Read more and watch a video.  Submit your photo to EarthSky here! Did a friend forward EarthSkyNews to you? Click here to get your own subscription!

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