[144] However, a few globular clusters have been found farther, such as PAL 4 and AM1 at more than 200,000 light-years from the Galactic Center. For observers from latitudes approximately 65° north to 65° south, the Milky Way passes directly overhead twice a day. Its visibility can be greatly reduced by background light, such as light pollution or moonlight. [38][39] The light originates from the accumulation of unresolved stars and other material located in the direction of the galactic plane. [89] Perfect logarithmic spiral patterns only crudely describe features near the Sun,[125][127] because galaxies commonly have arms that branch, merge, twist unexpectedly, and feature a degree of irregularity. If these arms contain an overdensity of stars compared to the average density of stars in the Galactic disk, it would be detectable by counting the stars near the tangent point. Our solar system including the sun and other planets is located 27000 lights years away from its galactic center. Boehle and associates (2016) found a smaller value of 25.64 ± 0.46 kly (7.86 ± 0.14 kpc), also using a star orbit analysis. This arm is shorter than the two major arms and lies along the bar of the galaxy. The total mass of all the stars in the Milky Way is estimated to be between 4.6×1010 M☉[59] and 6.43×1010 M☉. The Milky Way is a barred spiral galaxy with an estimated visible diameter of 1.9 million light-years (ly), give or take 0.4 million light years. Comments. The moon creates these perturbations as it sweeps through the 325-kilometer (200-mile) gap in the A ring. [51] Because the orbital velocity depends on the total mass inside the orbital radius, this suggests that the Milky Way is more massive, roughly equaling the mass of Andromeda Galaxy at 7×1011 M☉ within 160,000 ly (49 kpc) of its center. | doi = 10.1088/2041-8205/720/1/L72 | title = Our Milky Way As a Pure-Disk Galaxy – A Challenge for Galaxy Formation | journal = The Astrophysical Journal | volume = 720 | issue = 1 | pages = L72–L76 | year = 2010 | pmid = | pmc = |arxiv = 1005.0385 |bibcode = 2010ApJ...720L..72S. [15] Open clusters are also located primarily in the disk.[147]. The Milky Way[a] is the galaxy that contains our Solar System, with the name describing the galaxy's appearance from Earth: a hazy band of light seen in the night sky formed from stars that cannot be individually distinguished by the naked eye. [b] Maps of artificial night sky brightness show that more than one-third of Earth's population cannot see the Milky Way from their homes due to light pollution.[43]. [29][30] The dark matter halo around the Milky Way may span as much as 2 million light years. Was sagen die Nutzerbewertungen im Internet? [145] The globular clusters can follow rosette orbits about the Milky Way, in contrast to the elliptical orbit of a planet around a star. Within a few billion years of the birth of the first stars, the mass of the Milky Way was large enough so that it was spinning relatively quickly. The constant rotation speed contradicts the laws of Keplerian dynamics and suggests that much (about 90%)[31][32] of the mass of the Milky Way is invisible to telescopes, neither emitting nor absorbing electromagnetic radiation. Previously, these two galaxies, at around 2% of the mass of the Milky Way, were considered too small to influence the Milky Way. "The Milky Way, i.e. The term Milky Way is a translation of the Latin via lactea, from the Greek γαλαξίας κύκλος (galaxías kýklos, "milky circle"). As a result, he was able to come up with a distance estimate of 150,000 parsecs. The annotated artist's concept illustrates the new view of the Milky Way. Milky way galaxy map planets - Nehmen Sie dem Liebling unserer Experten. [203] The Local Group (a cluster of gravitationally bound galaxies containing, among others, the Milky Way and the Andromeda Galaxy) is part of a supercluster called the Local Supercluster, centered near the Virgo Cluster: although they are moving away from each other at 967 km/s (2,160,000 mph) as part of the Hubble flow, this velocity is less than would be expected given the 16.8 million pc distance due to the gravitational attraction between the Local Group and the Virgo Cluster. [17], In the Babylonian epic poem Enûma Eliš, the Milky Way is created from the severed tail of the primeval salt water dragoness Tiamat, set in the sky by Marduk, the Babylonian national god, after slaying her. The Milky Way is the galaxy that contains our Solar System, with the name describing the galaxy's appearance from Earth: a hazy band of light seen in the night sky formed from stars that cannot be individually distinguished by the naked eye. Searching the photographic record, he found 11 more novae. [75][76][d], Both gravitational microlensing and planetary transit observations indicate that there may be at least as many planets bound to stars as there are stars in the Milky Way,[29][77] and microlensing measurements indicate that there are more rogue planets not bound to host stars than there are stars. [34][186], According to observations utilizing adaptive optics to correct for Earth's atmospheric distortion, stars in the galaxy's bulge date to about 12.8 billion years old. Herzlich Willkommen auf unserer Webseite. [123] Spiral arms typically contain a higher density of interstellar gas and dust than the Galactic average as well as a greater concentration of star formation, as traced by H II regions[124][125] and molecular clouds.[126]. There are at least 300 million habitable planets in the Milky Way, new NASA research has shown – hinting that it’s less likely that humanity is alone in the universe. Trotz der Tatsache, dass die Urteile dort immer wieder nicht ganz neutral sind, bringen diese in ihrer Gesamtheit einen guten Anlaufpunkt! 500 light-years in diameter million light years.. 8 8.8 ± 1.7 billion years 's moon. [ 25 ], this article is about 240 million years at the radius of the Andromeda galaxy an. Per square arcsecond in order for the Milky Way [ 228 ] the dark matter around... Radius of the spiral arms of the path traveled collection of stars formed in this illustration darstellen! 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