New Dwarf Planet Found in Our Solar SystemCalla Cofield,SPACE.com
句中有明确的时间状语last year(去年),表示过去某个特定时间发生的动作,所以要用一般过去时,discover的过去式是discovered。A选项是原形,用于一般现在时;C选项是现在完成时,表示过去发生的动作对现在造成的影响或结果,这里没有这种语境;D选项是一般将来时,表示将来的动作,均不符合题意。
32.C 细节理解题.根据句子Astronomers now believe there may be thousands of previously unknown objects orbiting the Sun at this distance,这里天文学家相信是有可能而不是一定,所以A选项不正确;根据句子Astronomers have discovered a new PINK planet on the edge of our solar system一个新的发现但是不是第...
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Read the full-text online article and more details about "Meet Xena, the First New Planet to Be Found in Our Solar System since Pluto ; Minus 400F and Made of Unwelcoming Rock and Ice, Our Newest Cosmic Neighbour Has Had Astronomers Racing against One An
Earth is in a stable orbit around the Sun and despite the star’s huge size and far greater gravity compared to our planet, it’s thankfully unable to pull us in towards it. What actually falls into a black hole The reason material is able to cross the event horizon is collisions ...
To be classified as a planet, researchers must confirm its status within a 99 percent likelihood. The research that led to the confirmation of the 1,284 new planets analyzed data collected by the Kepler as of July, when the space telescope had identified 4,302 potential planets. This data ...
For a few evenings around 28 February, every planet in the solar system will be visible in the night sky, thanks to a rare great planetary alignment. Here's how to make sure you don't miss this planetary parade.
NASA’s new citizen science platform, Planet Patrol, invites the public to collaborate with professional astronomers in searching for exoplanets using star-studded images from the TESS satellite. HelpNASAfind exoplanets,worlds beyond our solar system, through a newly launched website calledP...
our ability to store memories—and uses it to remember the flowers with the best pollen. They fly around to the different flowers and memorize which ones are good and which ones less so. The book reminds you that we’re not the only ones here on the planet. There are other animals and...