Our planet sits in the solar system. Each star's system has its name after the star. If Antares has a system, its name would be the Antares System.( )1. The sun has at least of history. A. 4. 5 billion years B. 149 million years C. 149 billion years D. 4. 5 million years...
be distinguished by their locations. Our galaxy, the Milky Way, is shaped like a flat disk surrounding a central bulge. Whereas Population I stars are found mainly in the galactic disk, Population II stars mostly reside in the central bulge of the galaxy and in the halo surrounding this ...
UCLA astrophysicists find closest star to supermassive black hole in Milky Way galaxyBy Amina Khan
The sun is a normal(正常的) star just like every 22 star in the sky.Many of the stars in our sky have 23, such as Antares(天蝎座a星) and Betelgeuse(猎户座a星). Similarly the sun also has a name.The name of our sun is Sol(太阳神). Our planet 24 in the solar system. Ea...
black hole caused by the collapse of a star, known as a stellar black hole—and it’s the largest of this type discovered in our galaxy. As a “dormant” black hole, it isn’t actively siphoning energy and materials from a companion star, making it...
How would our galaxy merging with Andromeda impact Earth and our solar system? Not predictable for certain (because there is some tiny probability of a near collision of the sun with an M31 star) but almost certainly fairly minor because the stars are so far apart compared to their sizes and...
Nearly everyone knows aboutSirius. It's the brightest star in our night sky and has been, at times in our history, used as a harbinger of planting by the Egyptians, and a predictor of seasonal change by other civilizations. Sirius is actually a binary star system containing Sirius A and ...
"The improvement of this precision to 1 percent is a gigantic step towards improving our comprehension of the expansion of the universe and of the dark energy phenomenon, which is one of the greatest contemporary enigmas in astrophysics," said Gieren, who is also co-author of the publication ...
Heavy elements make up about 2 percent of the chemical content (by mass) of our solar system; the other 98 percent is hydrogen and helium. In some very old star systems, which formed before many heavy elements were produced, the heavy-element share may be less than 0.1 percent. [#high...
This is why NASA plans to launch a probe towards Alpha Centauri in 2069. The intent of this interstellar space mission is to search for biosignatures on planets around the stars in the Alpha Centauri system. Even here in ourMilky Way galaxy, there are at least 10 possible habitable planets...