After Earth and moon were formed, big rocks crashed into them. There were also a lot of volcanoes that spouted dust and ash. They spread hot liquid rock(or lava)over parts of Earth and the moon. On Earth much of the lava ...
For billions of years, meteorites(陨石) crashedinto the Moon. After thousand of times, craters wereformed. The smallest craters are as tiny as the tip of aknife. The largest are as wide as the United States!4.Do you know that the Moon is the only place inspace that humans have ...
MALE PROFESSOR: We think meteors that crashed into the Moon, or tails of passing comets, may have introduced water molecules.Any water molecules that found their way to the floors of craters near the Moon's poles, that water would be perpetually frozen because the floors of those craters are...
MORE: Places the U.S. Government Warns Not to Travel Right Now * The first launch was in 2016, when a Soyuz-2 rocket blasted off. The most recent launch was a Soyuz rocket carrying the ill-fated Luna-25 moon spacecraft, which crashed into the moon. (Reporting ...
C.Water ice could contain evidence of primitive life on the Moon. D.Water ice could be tested to find out what type of meteors crashed into the Moon. 点击查看答案 第3题 Why is the South Pole-Aitken Basin thought to be exceptionally old?A.The walls of the Basi Why is the South Pole...
dozens of smaller almost-planets. One such object, roughly the size of Mars,crashed into the Earth. That collision vaporized a good chunk of our planet’s mass, sending it into orbit. Most of it rained back down, but some stayed up, eventually coalescing and cooling to become our moon....
beamscrashedintoapolishedmirror—thelightbucketoftheHubbleSpaceTelescope. InareportpublishedWednesdayinthejournalNature,ateamofastronomersassertsthatthis isthemostdistantindividualstareverseen.Theydescribeitas50to100timesmoremassivethan oursun,androughly1milliontimesbrighter,withitsstarlighthavingtravelled12.9billionyears...
完型填空 I was tired and hungry after a long day of work.When I walked into the living room, my 12-year-old son looked 1 at me and said, “I love you. I didn’t know what to say. 2 several seconds all I could do was to stand there and 3 down at him.
Just use your imagination for this one. Ask yourself: What if we terraformed the moon? It’s obvious that we can’t just pack our stuff up and move there today. But what if we re-shaped it into an image that resembled Earth?
Another crashed into the ocean after missing by mere feet the Akagi’s island and the probable killing of Admiral Nagumo, the commander of Kido Butai as well as the mission to invade Midway. The drama and heroism of these crews should not go unremarked. If nothing else were to change ...