A new evaluation of global climate models used to project Earth’s future global average surface temperature finds that most have been quite accurate.
NASA, French Space Laser Measures Massive Migration of Ocean Animals
Researchers used the space-based CALIPSO lidar to measure the planet’s largest animal migration, which takes place when small sea creatures swim up from the depths at night to feed on phytoplankton, then back down again just before sunrise. Credit: NASA/Timothy Marvel
Exploring the Night Sky with Hubble’s Caldwell Catalog
During the 18th century, French astronomer Charles Messier compiled a list of over 100 cosmic objects that might fool fellow comet hunters into thinking they had discovered new comets. In the 1980s, an Englishman named Sir Patrick Moore produced an additional list to highlight more cosmic wonders visible to amateur astronomers.
Galactic Pyrotechnics From 23 Million Light Years Away
A galaxy about 23 million light years away is the site of impressive, ongoing fireworks. Rather than paper, powder and fire, this galactic light show involves a giant black hole, shock waves and vast reservoirs of gas.
Surprise! TESS Shows Ancient North Star Undergoes Eclipses
Astronomers using data from NASA’s Transiting Exoplanet Survey Satellite (TESS) have shown that Alpha Draconis, a well-studied star visible to the naked eye, and its fainter companion star regularly eclipse each other. While astronomers previously knew this was a binary system, the mutual eclipses came as a complete surprise.