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The Milky Way is approximately 890 billion to 1.54 trillion times the mass of the Sun in total (8.9 × 10 11 to 1.54 × 10 12 solar masses), [ 7][ 8][ 9] although stars and planets make up only a small part of this. Estimates of the mass of the Milky Way vary, depending upon the method and data used.
Satellite galaxies that orbit from 1,000 ly (310 pc) of the edge of the disc of the Milky Way Galaxy to the edge of the dark matter halo of the Milky Way at 980,000 ly (300 kpc) from the center of the galaxy, [ a ] are generally depleted in hydrogen gas compared to those that orbit more distantly. This is because of their interactions with the ...
Pillars of Creation is a photograph taken by the Hubble Space Telescope of elephant trunks of interstellar gas and dust in the Eagle Nebula, in the Serpens constellation, some 6,500–7,000 light-years (2,000–2,100 pc; 61–66 Em) from Earth. [ 1 ] These elephant trunks had been discovered by John Charles Duncan in 1920 on a plate made with ...
The best time to see the Milky Way is up to a week before and within days after a new moon to avoid excess light in the night sky. Through the remainder of this summer into early fall, a new moon ...
The first image of the black hole at the center of the Milky Way galaxy, named Sagittarius A*, has been captured by NASA's Event Horizon Telescope. Supermassive black hole in Milky Way, at 'heart ...
Galactic Center. The Galactic Center, as seen by one of the 2MASS infrared telescopes, is located in the bright upper left portion of the image. Marked location of the Galactic Center. The Galactic Center is the barycenter of the Milky Way and a corresponding point on the rotational axis of the galaxy. [ 1][ 2] Its central massive object is a ...
Stargate (device) A Stargate is a fictional Einstein–Rosen bridge portal device within the Stargate fictional universe that allows practical, rapid travel between two distant locations. [ 1] The devices first appeared in the 1994 Roland Emmerich film Stargate, and thereafter in the television series Stargate SG-1, Stargate Infinity, Stargate ...
Astronomers have used the Gaia space telescope to spy some of the first building blocks of the Milky Way galaxy: two ancient streams of stars named Shakti and Shiva that helped our home galaxy ...