So even though a supernova means a star hasdied, it also marks the birth of elements that support life.阅读短文,从每题所给的A、B、C和D四个选项中,选出最佳选项。The author is describing someoneobservingA. an asteroid(小行星)hiting a planetB. a plant thti dyingC. the Sun outshining ...
Rusty Marks
Generally, the more massive the star, the faster it burns up its fuel supply, and the shorter its life. The most massive stars can burn out and explode in a supernova after only a few million years of fusion. A star with a mass like the Sun, on the other hand, can continue fusing...
Star Trek: Prodigy Season 1, Episodes 19 & 20, "Supernova, Parts I & II" After First Contact with Starfleet led to the Vau N'Akat nearly wiping themselves out, the Vau N'Akat vowed revenge by placing a weapon, the living construct, within the USS Protostar, which would destroy Starfl...
The closest known star that will soon undergo a core-collapse supernova is Betelgeuse, just 640 light-years away. Here’s what we’ll observe. Observation of the red supergiant star, Betelgeuse, revealed a vast plume of gas almost as large as our Solar System and a gigantic bubble boiling...
No supernova, no black hole Our sun isn't massive enough to trigger a stellar explosion, called a supernova, when it dies, and it will never become a black hole either. In order to create a supernova, a star needs about 10 times the mass of our sun. An object of that size would...
the author usesthe star Beteigeuse as an exampe ofA one ofthe mostvisible starsinthe Earth's night skyone ofth few blue giantstars that existin the galaxyC a starthatislikey to become a supernova when tdies a red giant starthatused to be a main sequence starFill in a Table ...
答案：分为核心家庭、主干家庭、联合家庭、单亲家庭及其他（指一些不完全的家庭，如单身家庭、重组家庭、家庭等）。题型：简答题案例分析题【案例分析题】国家卫健委消息显示，2017年1月，中国人感染H7N9禽流感发病192例，死亡79人。H7N9的主要传播方式是人类主动接触患病的禽类。已报道某市有3例人感染H7N9...
billions of years ago as a giant cloud of molecular gas and dust. Then, approximately 4.57 billion years ago, this cloud experienced gravitational collapse at its center, where anything from a passing star to a shock wave caused by a supernova triggered the process that led to our Sun’s ...
billions of years ago as a giant cloud of molecular gas and dust. Then, approximately 4.57 billion years ago, this cloud experienced gravitational collapse at its center, where anything from a passing star to a shock wave caused by a supernova triggered the process that led to our sun's ...