The December 2018 close approach by the large, near-Earth asteroid 2003 SD220 has provided astronomers an outstanding opportunity to obtain detailed radar images of the surface and shape of the object and to improve the understanding of its orbit. The asteroid will fly safely past Earth on Saturday, Dec. 22, at a distance of about […]
As the brilliant comet 46P/Wirtanen streaked across the sky, NASA telescopes caught it on camera from multiple angles. NASA’s Hubble Space Telescope photographed comet 46P/Wirtanen on Dec. 13, when the comet was 7.4 million miles (12 million kilometers) from Earth. In this visible-light image, the comet’s nucleus is hidden in the center of a fuzzy […]
[dropcap]I[/dropcap]n a new study published in the journal Nature Ecology & Evolution, an international team led by Professor Baoyu Jiang of Nanjing University and including Dr Michael Pittman of the Department of Earth Sciences, the University of Hong Kong, shows that pterosaurs had at least four types of feathers in common with their close relatives the […]
[dropcap]S[/dropcap]eventy percent of the current infrastructure in the Arctic has a high potential to be affected by thawing permafrost in the next 30 years. Even meeting the climate change targets of the Paris Agreement will not substantially reduce those projected impacts, according to a new study published in Nature Communications. “Much more needs to be […]