Space missions help answer one of humanity's most profound questions: Are we alone in the universe? To begin to understand what makes a planet habitable, and thus where to look for life both within and outside o
To visually support this question in the article, I wanted a diagram that shows how many potentially rocky exoplanets astronomers have discovered in their star’s putative habitable zones. Ahabitable zoneis the narrow range of distances an Earth-like planet could be from its star such that the ...
A. It should be as big as the Earth. B. It should be a gas planet. C. Must be around a planet like the sun. D. It must have liquid water. 相关知识点: 试题来源: 解析 B 宜居行星必须具备固体表面,而气态行星没有固体表面,因此不适合生命存在。选项B描述了宜居行星不应该具备的特征,所以...
“To understand the origin of life, it becomes important to understand when and how Earth began hosting an ocean with a more neutral pH,” said Meng Guo, a former Yale graduate student in Korenaga’s lab who is now a presidential postdoctoral fellow at Nanyang Technological University in Sing...
If the corporation fails in its competition with other corporations, those investments or loans may be lost with no guaranteed compensation. 追求利润是公司存在的原因,所以他们通常很少关注竞争可能降低利润的副作用; Seeking profits is the reason for the existence of corporations, so they typically pay ...
The word "year," is normally a unit of time, but light-years measure distance. M. Aurelius/Shutterstock A light-year is a way of measuring astronomical distances in space. That doesn't make much sense because "light-year" contains the word "year," which is normally a unit of time. ...
Could they temporarily form liquid water beneath the ice as they melt, allowing ferrihydrites to form, which then get blown around the planet when the ice is gone? If that sort of mechanism occurred over much of the planet's surface in the past, would it still have required lakes, rive...
Generally, the months are based on the lunar cycles, while the year itself is based on Earth's orbit around the sun. One example is the Jewish calendar, which features 12 synodic months. Each month has 29 or 30 days, except for Ḥeshvan and Kislev, which each may have 29 or 30 da...
Switching to renewable energy is a no-brainer for the planet. But if you’re a homeowner, investing in residential solar power isn’t necessarily a no-brainer for your bank account — at least not on the surface. Look deeper, and you’ll find that switching to solar is an excellent long...
So I’ll call them moons, other moons in the outer solar system. NASA has a mission to Jupiter's moon Europa in October, which will assess if Europa’s underground ocean is habitable. Japan is also sending a mission to visit to moons of Mars, Phobos and Deimos, the rover will land ...