Measuring the Temperatures of Red Giants is Actually Pretty Tricky Artist's impression of a red giant star. If the star is in a binary pair, what happens to its sibling? Credit:NASA/ Walt Feimer Red giant stars are, well, red and giant. But astronomers have always had difficulty estimat...
城市喧嚣人头攒动 我独自寻求内心平静|reflection——Haisuinonasa 11:44 「伦敦/电子 古典 实验」力推!通过原声乐器与电子打造不同的情绪|Great Doubt——Astrid Sonne 12:19 「日本/电子 实验」力推!“浮生若梦,为欢几何”|L.O.L.(Lack Of Love )——坂本龙一 11:01 「瑞典/现代爵士」力推!使我的...
Canopus, the second-brightest star in the sky, is visible in this view photographed by astronaut Donald R. Pettit.Courtesy NASA / Johnson Space Center Canopus was well known to the ancients and is named either for an ancient city in northern Egypt or the helmsman for Menelaus, a mythological...
Sirius A (left) and B (right) (Image credit: NASA) Locating Sirius: Magnitude: -1.46 Type: Main sequence, A0 Constellation: Canis Major Sirius is the brightest star in the night sky, and sometimes the brightest object of all. The Moon and the planets Jupiter, Venus and Mars— and occas...
star- (astronomy) a celestial body of hot gases that radiates energy derived from thermonuclear reactions in the interior Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc. Want to thank TFD for its existence?Tell a friend about us, add a link ...
(Image credit: NASA, ESA, and P. Crowther (University of Sheffield)) Jump to: Extreme temperature Life-cycle Giant blue stars Additional information Blue stars are by far the biggest and brightest stars in the galaxy. To the naked eye, the stars in the night sky all look very simil...
These luminous balls of gas helped ancient explorers navigate the seas and now help modern-day scientists navigate the universe.
1. Stephenson 2-18 (2,150) Solar Radii, the biggest known star in the Universe The red hypergiant Stephenson 2-18, also known as Stephenson 2 DFK 1 or RSGC2-18 is the largest known star in the Universe. It is so big that around 10 billion Suns could fit inside it. ...
The Sun is an example of a G-type main-sequence star (yellow dwarf). NASA Solar Dynamics Observatory. Nonetheless, even though all the Sun’s visible light is blended to produce white, its visible light emission peaks in the green part of the spectrum, but the green component is absorbed...
Want more information on stars? Here’sHubblesite’s News Releases about Stars, and more information fromNASA’s imagine the Universe. We have recorded several episodes of Astronomy Cast about stars. Here are two that you might find helpful:Episode 12: Where Do Baby Stars Come From, andEpisod...