根据第四段中“Earth’s galaxy is called the Milky Way”地球所在的星系叫银河系,常理可知星系是有很多星星组成的。故选C。小题4:推理判断题。根据第五段最后一句“The supermassive black hole at the center of the Milky Way galaxy has a mass equal to about four million suns and would fit inside...
Is it possible that extraterrestrial life forms exist within our Galaxy, the Milky Way? This book offers a critical analysis by leading experts in a range of sciences, of the plausibility that other intelligent lifeforms do exist. Exploration of the Solar System, and observations with telescopes ...
alone;With seven more planets it dwelled.In a great solar system, they circled the sun With asteroids and comets as well.Bella's spacecraft flew higher and higher.Now the sun was a speck of bright light In the Milky Way galaxy shaped like a disk.Bell a thought, what a wondrous sight!
If the Earth is typical, intelligent life could develop on other such planets and potentially develop interstellar travel. Even at a slow pace of colonization (a small fraction of the speed of light), the Milky Way galaxy could be completely traversed in a few million years, a tiny fraction...
, dust clouds or even the weak gravitational tidal forces created by theMilky Way galaxy, they may spiral inward toward the sun, according to a 2019 article in the journalAstronomy & Astrophysics. Or, the objects may be cast completely out of the solar system into distant regions of space....
To best see the Lyrids, go to the darkest possible location, lean back and relax.(Image credit: Future) Historical Lyrid meteor shower sightings A Lyrid meteor crosses the Milky Way galaxy in this photo taken by Tina Pappas Lee on Fripp Island, South Carolina. The photo was taken at approx...
When man began to search the skies,he saw a lot of things.In the universe,the earth seemed to be just a small bit of dust.It is only a small planet,and travels around the sun.The sun together with its planets,travels in the Milky Way,our galaxy.The Milky Way has about thirty ...
Astronomers Just Found a Nearby Alien Planet HD 20794 D With The Potential Of Sustaining Life Charles2 months ago09 mins Astronomers have been curious to find another civilization sharing the Milky Way galaxy with us. Hence, ever since we commenced space exploration, scientists have continued to ...
Aとこいなれさ流hole is a pla珊阑意春n space where gr箭似心归y pulls so much 花银树火 even light cannero
Its mass can be up to 20 times more than the mass of the sun. There may be many stellar mass black holes in Earth’s galaxy. Earth’s galaxy is called the Milky Way. The largest black holes are called “supermassive”(超大质量黑洞). These black holes have masses that are more than ...