保护地球，探索宇宙，发现文明
2020年10月27日 Venusian Volcano Imagined Illustration Credit: NASA, JPL-Caltech, Peter Rubin Explanation: What would an erupting volcano on Venus look like? Evidence of currently active volcanoes on Venus was announced earlier this year with the unexplained warmth of regions thought to contain only ancient volcanoes. Although large scale images of Venus have be...
2020 January 1 Betelgeuse Imagined Illustration Credit: ESO, L. Calcada Explanation: Why is Betelgeuse fading? No one knows. Betelgeuse, one of the brightest and most recognized stars in the night sky, is only half as bright as it used to be only five months ago. Such variability is likely just normal behavior for this famously variable supergiant, but the r...