Astronomers have argued for years about how stars condense out of the diffuse clouds of dust and gas called nebulas. 由尘埃和气体构成的云团被称为星云。有关恒星如何从呈弥漫状态的星云凝缩而来,天文学家们争论了很多年。 huzhangao.blog.163.com 4. Occasionally , these large chunks of ice smash int...
There are also cold, dark nebulas that may or may not have starbirth occurring inside them. These clouds of gas and dust contain hydrogen and dust. So-calleddark nebulasare sometimes referred to asBok globules, after the astronomer Bart Bok who first observed them in the early 1940s. They ...
But most of the time you can't see the water. The drops of water are too small to see. They have turned into a gas called water vapor. (1) ___ The cooler air causes the water droplets to start to stick to things like bits of dust, ice or sea salt. (2)...
Molecular cloudsare massive clouds of gas and dust out of which stars form. They’re called molecular clouds because they’re mostly molecular hydrogen, though they can contain many different compounds. Though the clouds are filamentary in nature, they do form clumps of greater density that someti...
Stars are born when giantcloudsof gas and dust collapse. Whenever one of the collapsing regions becomes hot and dense enough for nuclear fusion to set in, a star is born. For massive stars, i.e. those stars that exhibit more than eight times the mass of the Sun, that is only part of...
A comparison is made between cold dust clouds, where presumably gas phase processes dominate the chemistry, and regions of high mass star formation such as Orion where both shocks and evaporation of dust grain mantles may play a role. In dust clouds, carbon rich molecules often show enhanced ...
Clouds of gas and dust collapse into stars. 子句类型: 定语从句 连接词: WHICH 分句-3 Stars form a spiral pattern. 子句类型: 定语从句 连接词: THAT 3. 句子成分 主句 That theory [主语] maintains [谓语] something. [宾语] 分句-1 A density wave of spiral [主语] form [谓语] sweeps...
The drops of water are too small to see. They have turned into a gas called water vapor. As the water vapor goes higher in the sky, the air goes cooler. The cooler air causes the water droplets (微滴) to start to stick to things such as bits of dust, ice or sea salt.Clouds ...
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A natural conclusion was, therefore, that it was aglowing cloudof dust and gas. Literature These brightglowing cloudsare called nebulas. OpenSubtitles2018.v3 We arrive at a vastglowing cloudof gas and dust: OpenSubtitles2018.v3 Nebula vastglowing cloudsof gas hanging in space. ...