Humans have launched themselves into the outer space. They've landed on the moon. They've built habitable space stations that orbit the Earth. The next giant leap for mankind is to reach another planet—specifically, Mars. The problem is that it's no easy task. The ...
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“The possibility of a planet in the habitable zone is exciting and also unexpected; we were not looking for this. However, it is important to keep in mind that more evidence is necessary to confirm the presence of a planet. We cannot observe the planet directly so ...
Sedna is a dwarf planet thought to be three-quarters the size of Pluto; it may be the innermost object in the Oort cloud. Discovered in 2003, Sedna has a wildly elliptical orbit that takes it far beyond the Kuiper Belt. The dwarf planet will approach perihelion— its closest point to the...
根据文章第二段Earth is the only known planet that stays in a perfect position from our Sun to support water in a liquid state.Astronomers call this perfect distance from a star the "habitable (宜居的)" or "Goldilocks zone".(地球是已知的唯一一颗距离太阳很近的行星,...
The researchers have identified a range of planets where the UV light from their host star is sufficient to allow these chemical reactions to take place, and that lie within the habitable range where liquid water can exist on the planet's surface. ...
This week’s full Moon is the closest of the year. Read more… Invite Ross 128 Over This Thanksgiving With exoplanet Ross 128b in the news, we pay a visit to the star that sustains this potentially habitable exoplanet. Read more… Tour November’s Sky: Predawn Planets As you’ll ...
Adding more debt,or taking steps to hold interest rates even lower, is probably the closest we can come to a reasonable way of temporarily putting off financial collapse. It is not clear where more debt can be added, though. The reason current debt programs are being discontinued is because...
题目Do you think alien beings(外星人) exist somewhere in the universe?It seems like Mars,our closest neighbor,has inspired the most science fiction as the place where aliens are most likely to come from.Recent Mars probes (探测) have shown us that there is no life on ...
The red planet is also a favorite destination of science fiction when imagining life outside of our home world. The more scientists learn about Mars, the more likely it appears that it may have once been habitable, based on geological evidence. In ancient times, the planet was likely much ...