搜索结果: 1-15 共查到“理学 A planet”相关记录99条 . 查询时间(0.125 秒)
As a star runs out of fuel, it will billow out to a million times its original size, engulfing any matter — and planets — in its wake. Scientists have observed hints of stars just before, and shortly ...
Gas giants orbiting our sun show a clear pattern; the more massive the planet, the lower the percentage of “heavy” elements (anything other than hydrogen and helium) in the planet’s atmosphere. But ou...
Responsive design meets responsibility for the planet’s future（图）
永久冻土 响应式设计 清洁能源 可持续发展 气候学
2023/6/19
MIT senior Sylas Horowitz kneeled at the edge of a marsh, tinkering with a blue-and-black robot about the size and shape of a shoe box and studded with lights and mini propellers.
Astronomers see carbon dioxide on planet outside solar system for first time（图）
詹姆斯韦伯 太空望远镜 系外行星 大气
2023/6/25
Scientists using NASA’s James Webb Space Telescope have captured definitive evidence of carbon dioxide in the atmosphere of a planet beyond our solar system.
When it comes to directly imaging Earth-like exoplanets orbiting faraway stars, seeing isn’t always believing.
Small stars share similar dynamics to our sun, key to planet habitability
magnetic activity cool stars magnetic environment
2021/8/10
Scientists show that 'cool' stars like the sun share dynamic surface behaviors that influence their energetic and magnetic environments. Stellar magnetic activity is key to whether a given star can ho...
Solving solar puzzle could help save Earth from planet-wide blackouts
space weather prediction convection sunspots
2021/8/6
Understanding the Sun's magnetic dynamo could help predict solar weather, such as potentially dangerous geothermal storms, solar flares and sunspots. Mathematicians have proposed a new model of the Su...
Earth's mantle, not its core, may have generated planet's early magnetic field（图）
Earth's mantle generated planet early magnetic field
2020/3/13
New research lends credence to an unorthodox retelling of the story of early Earth that was first proposed by a geophysicist at the Scripps Institution of Oceanography in La Jolla, Californi...
Climate change, biodiversity, infectious diseases, sustainability, energy, food, and water are among the areas of greatest global concern. The SIAM Activity Group on Mathematics of Planet Earth (SIAG/...
Gases from ancient Inland Northwest volcanic eruptions blocked out sun,cooling planet（图）
Gases ancient Inland Northwest volcanic eruptions blocked out sun cooling planet
2017/10/25
The Pacific Northwest was home to one of the Earth’s largest known volcanic eruptions, a millennia-long spewing of sulfuric gas that blocked out the sun and cooled the planet, Washington State Univers...
Loving pandas isn’t just a feel-good activity. Recent Michigan State University (MSU) work shows China’s decades of defending panda turf have been good not just for the beloved bears, but also protect...
A newly discovered Jupiter-like world is so hot that it’s stretching the definition of the word “planet.”With a day-side temperature of 4,600 Kelvin (more than 7,800 degrees Fahrenheit), planet KELT-9...
Astronomers discover dark past of planet-eating ‘Death Star’
Astronomers dark past planet-eating Death Star
2016/12/27
An international team of scientists, including researchers from the University of Chicago, has made the rare discovery of a planetary system with a host star similar to Earth’s sun. Especially intrigu...
Rings around young star suggest planet formation in progress
Rings around young star planet formati progress
2016/12/27
Rice University astronomers and their colleagues have for the first time mapped gases in three dark rings around a distant star. The rings mark spaces where planets are thought to have formed from dus...
If you thought Luke Skywalker's home planet, Tatooine, was a strange world with its two suns in the sky, imagine this: a planet where you'd either experience constant daylight or enjoy triple sunrises...
