Have there been visitors to the earth from other planets? Why has no one communicated with us? We do not know the answers... yet. 相关知识点: 试题来源: 解析 Passage 1 1. other 2. around 3. environment 4. larger 5. discov- ered 6. reach 7. impossible 8. photos 9. outside 10....
Little girl holding colorful balloons, jumping from one mountain top to the other; success/achievement concept, fantasy background Lonely little girl sitting on the swing above clouds; fantasy/solitude/surreal background with copy space Creative autumn layout made of fallen leaves in shape of a...
However, no spaceship has travelled far enough to reach other stars in our galaxy.Scientists have always asked the question: with so many stars in the universe, are we alone in space? Have there been visitors to the earth from other planets? Why has no one else in the galaxy been found ...
The night sky is filled spectacular cosmic treasures, from the moon and other planets to distant stars and galaxies. See amazing pictures of the night sky as seen by veteran observers and amateur astronomers here. Related Topics: Space History Photos Join our Space Forums to keep talking space...
Many people say that they have seen flying saucers(飞碟)in the sky. 31 can these things be ? Some people think that they are spaceships from other planets. Doctors 32 that perhaps they are only a weakness of the eyes. It is possible that they are our own planes 33 very high. Or are...
But even pictures of our closest neighbors like the sun, moon, and planets in the Solar System have new surprises for us. Using sophisticated instruments, we can see different wavelengths of light, moons transiting across planets, and spectacular closeups of peaks and craters. Some of these ...
This image of Pluto's largest moon, Charon, shows a rust-colored spot, made of organic compounds called tholins. Scientists believe these tholins are a product of methane, nitrogen and other gasses released from Pluto's atmosphere and deposited on the moon.lagoon...
Many other electronic transitions have been found in the aurora, including emission lines for O, O+, N, and N+(OI, OII, NI, and NII in the old notation). In the plasmasphere, a region of cold plasma between about 1000–10,000 km, there are many other ions, including H+, He+, ...
I do think though that we should split out CCD cameras from Digital Cameras for DSO work only. For Planets and the Moon a digital camera can pretty much hold its own against a CCD.Charles Back to Experienced Deep Sky Imaging CNers have asked about a donation box for Cloudy Nights over...
In addition, it recognizes two other planets, Rahu and Ketu. All the Burmese names of the planets are borrowed from Hindu astrology, but the Burmese Rahu and Ketu are different from the Hindu Rahu and Ketu. The Burmese consider them to be distinct and separate planets, whereas Hindu ...