保护地球，探索宇宙，发现文明
2021年06月06日 A Distorted Sunrise Eclipse Image Credit & Copyright: Elias Chasiotis Explanation: Yes, but have you ever seen a sunrise like this? Here, after initial cloudiness, the Sun appeared to rise in two pieces and during partial eclipse, causing the photographer to describe it as the most stunning sunrise of his life. The dark circle near the top o...
2020年12月18日 Diamond in the Sky Image Credit & Copyright: Mariano Ribas (Planetario de la Ciudad de Buenos Aires) Explanation: When the shadow of the Moon raced across planet Earth’s southern hemisphere on December 14, sky watchers along the shadow’s dark central path were treated to the only total solar eclipse of 2020. During the New Moon&#...
2020年11月11日 Colors of the Moon Image Credit & Copyright: Marcella Giulia Pace Explanation: What color is the Moon? It depends on the night. Outside of the Earth’s atmosphere, the dark Moon, which shines by reflected sunlight, appears a magnificently brown-tinged gray. Viewed from inside the Earth’s atmosphere, though, the moon can appear quit...
2020 June 15 A Ring of Fire Sunrise Solar Eclipse Video Credit: Colin Legg & Geoff Sims; Music: Peter Nanasi Explanation: What’s rising above the horizon behind those clouds? It’s the Sun. Most sunrises don’t look like this, though, because most sunrises don’t include the Moon. In the early morning of 2013 May 10, however, from We...
2019 December 28 A Distorted Sunrise Eclipse Image Credit & Copyright: Elias Chasiotis Explanation: Yes, but have you ever seen a sunrise like this? Here, after initial cloudiness, the Sun appeared to rise in two pieces and during partial eclipse, causing the photographer to describe it as the most stunning sunrise of his life. The dark circle near the t...
2019 December 27 A Partial Solar Eclipse Sequence Reflected Image Credit & Copyright: Majid Ghohroodi Explanation: What’s happened to the Sun? Yesterday, if you were in the right place at the right time, you could see the Sun rise partially eclipsed by the Moon. The unusual sight was captured in dramatic fashion in the featured image not only direc...
2019 December 25 An Annular Solar Eclipse over New Mexico Image Credit & Copyright: Colleen Pinski Explanation: What is this person doing? In 2012 an annular eclipse of the Sun was visible over a narrow path that crossed the northern Pacific Ocean and several western US states. In an annular solar eclipse, the Moon is too far from the Earth to block out ...
地球上的我们是幸运的， 因为我们可以看到日全食， 可以看到瑰丽的日冕。 地球上的我们大约每16个月可以看到一次日全食（当然，每次能看到的地方是不同的）。来源：ESA[1] 这并不是一件容易的事，基本只能靠宇宙的馈赠。因为这要求太阳和月亮在地球上看起来大小差不多才行——而刚刚好，太阳的大小是月球的约400倍，而太阳到地球的距离是月亮到地球距离的约400倍。 日全食的原理，月亮几乎刚好可以完全遮住太阳。来源：ESA[1] 将来的火星移民们就没那么幸运了。 火星虽然有两颗卫星，但它们都太小了。 [rml_read_more] 火星的两颗卫星火卫一（Phobos）和火卫二（Deimos），直径分别只有26公里和16公里（火星平均半径3389.5公里） 火卫一、火卫二和火星，大小和距离没有按比例。来源：NASA[2] 日...