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1 giorno fa · Stellarium Web is a planetarium running in your web browser. It shows a realistic star map, just like what you see with the naked eye, binoculars or a telescope.
2 giorni fa · star, any massive self-luminous celestial body of gas that shines by radiation derived from its internal energy sources. Of the tens of billions of trillions of stars composing the observable universe, only a very small percentage are visible to the naked eye. Many stars occur in pairs, multiple systems, or star clusters.
3 giorni fa · Of the roughly 10,000 stars visible to the naked eye, only a few hundred have been given proper names in the history of astronomy. Traditional astronomy tends to group stars into constellations or asterisms and give proper names to those, not to individual stars.
6 giorni fa · Goddard Space Flight Center. May 17, 2024. Image Article. This NASA Hubble Space Telescope image captures a triple-star star system. NASA, ESA, G. Duchene (Universite de Grenoble I); Image Processing: Gladys Kober (NASA/Catholic University of America)
3 giorni fa · A star is a luminous spheroid of plasma held together by self-gravity. [1] . The nearest star to Earth is the Sun. Many other stars are visible to the naked eye at night; their immense distances from Earth make them appear as fixed points of light.
10 mag 2024 · The most massive of these stars are short-lived, a few million years, and end their days as supernova explosions. This high level of star formation makes UGC 9684 a veritable supernova factory, and a galaxy to watch for astronomers hoping to examine these exceptional events. Text Credit: European Space Agency (ESA)
3 giorni fa · Wolf–Rayet star. James Webb Space Telescope image of the Wolf–Rayet star WR 124 and the nebula M1–67 surrounding it. NIRCam and MIRI composite. Wolf–Rayet stars, often abbreviated as WR stars, are a rare heterogeneous set of stars with unusual spectra showing prominent broad emission lines of ionised helium and highly ionised ...
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