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 o...
These interstellar planets spin through space without orbiting a star. It's believed this occurs when a planet either flung out of a planetary system by gravitational forces or when a planet forms from debris outside of a stellar region.这些流浪汉在星系间穿越，但并不围绕着恒星运动。之所以会发生...
Are Earth-like habitable planets prevalent in the universe? Are planets able to maintain a large amount of water when migrating to a habitable orbit? Can low-mass exoplanets develop an atmosphere suitable for life? Answers to such questions rely on further analysis of the physical properties of ...
In searching the universe, we are not looking for an escape to our problems: Earth is our unique and only home in the universe. There is no planet B.(生活在一个变暖的地球上带来了许多挑战。科学家研究火星和其他行星是为了更好地了解我们自己。在探索宇宙的过程中,我们并不是在寻找逃避问题的方法...
Hontas Farmer
Marcy added later in the discussion that there’s one type of telescope that would most helpful: aTerrestrial Planet Findertype mission that would measure the temperature, size, and the orbital parameters of planets as small as our Earth in the habitable zones of distant solar systems. Alas, ...
A planet the size of Kepler-186f is likely to be rocky. (Image credit: NASA Ames/JPL-Caltech/T. Pyle) This planet is at most 10 percent larger than Earth, and it also appears to reside in the habitable zone of its star, though on the zone's outer edge; Kepler-186f receives just...
Maintaining life on an initially wet rocky planet in the habitable zone may be like trying to ride a wild bull. Most riders falls off. So inhabited planets may be rare in the universe, not because emergent life is rare, but because habitable environments are difficult to maintain during the...
A planet outside our solar system that revolves around a star is an exoplanet or… The Latest News NASA Materials Indicate SpaceX Targets Mars Landing for Starship by 2030 Top Popular2 Min Read NASA had announced the contenders for the mission to return the samples… ...
s moon Enceladus) have almost no carbon on their surfaces, and it is unclear how much could be sourced from their interiors. Titan is the most organic-rich icy moon in the Solar System, so if its subsurface ocean is not habitable, it does not bode well for the habitability of other ...