Space News & Blog Articles

On August 19, 2022, solar astronomers using the Daniel K. Inouye Solar Telescope (DKIST) on the Hawaiian island of Maui caught the fading remnants of a C-class solar flare. Their observations showed something unusual: very strong spectral fingerprints of calcium II H and hydrogen-epsilon lines. It was the first time these two light signatures were seen in great detail during the decline of a solar flare. According to computer models, those lines were stronger than expected and play a not well-understood role in how flares heat the solar atmosphere where they occur. The same models can be used to study flares in other stars, as well.

NASA's Artemis II mission has completed its pass of the far side of the Moon, establishing a new distance record for a crewed spaceflight, over 400,000 km (250,000 mi) from Earth. And in the process, its four-person crew is capturing images of lunar regions no human has ever seen! Fortunately for the rest of us, they are beaming these images home and providing a treasure trove of scientific data in the process. The images, released on Tuesday, were captured by the crew on April 6th during their seven-hour flyby of the far side of the Moon.

Despite all we've learned about star formation, the process is still riven with mystery. Our prying telescopic eyes struggle to pierce the thick gaseous regions that give birth to stars. Progress has been steady, though, and we can thank the Atacama Large Millimeter/sub-millimeter Array (ALMA) for some of it.

Reading the Mars Trilogy by Kim Stanley Robinson brings the benefits and pitfalls of efforts to terraform the Red Planet into sharp relief. Since the 1970s, when Carl Sagan first suggested the possibility that we could make Mars more Earth-like, that process has been a staple of science fiction. But there’s always been a significant amount of humanity that thinks we shouldn’t. A new paper available in pre-print on arXiv from Edwin Kite of the University of Chicago and his co-authors skirts around the ethical and moral questions of whether we should and tries to take a long hard look at whether we can.

The James Webb Space Telescope's (JWST) picture of the month shows Tau 042021 (left) and Oph 163131 (right), two protoplanetary disks located about 450 and 480 light-years from Earth in the constellations Taurus and Ophiuchus (respectively). These disks are composed of material left over from the formation of new stars, which coalesce into planetesimals that can eventually form a planetary system. The gas that remains is blown away by solar radiation while smaller objects (asteroids and iceteroids) settle into belts or follow the orbit of planets.