milky way - What is the closest galaxy? - Astronomy Stack Exchange
Nov 19, 2020 · I think that the galaxy closest to the Earth, that is, to the Milky Way, is the nebula called Andromeda, which is 2.5 million light years away. Despite this great distance, M31 is visible, and very pretty. Are there any galaxies closer …
galaxy - What is the likely closest encounter for a typical star …
May 17, 2019 · Fate of the Spiral Arms of the Milky Way and Andromeda 2 What would be the outcome for life in our galaxy if the merger of the Milky Way and Andromeda creates a Quasar?
distances - How many light years away is Earth from the closest …
Aug 26, 2014 · How many light years is Earth away from the closest outer edge of the supermassive black hole in Sagittarius A* at the center of the Milky Way? I don't mean the distance to the center of the galaxy, but to the point in the black hole's circumference where it …
galaxy - Is there a map of the galaxies? - Astronomy Stack Exchange
Mar 19, 2016 · I we define the diameter of the solar system as about 200 AU (100x Earth-sun orbit and about the distance to the heliopause) then the ratio of the diameter of the Milky Way to the solar system is about 3 x 10E7. If we take the diameter of the observable universe as about 100 billion LY, then it is only about 10E6 times the diameter of the Milky ...
escape velocity of leaving the Milky Way galaxy vertically and ...
Jun 21, 2022 · Most of the objects in the Milky Way or orbiting along the plane at pretty high speed. I thought I'd throw that out there. Escape Velocity from the Sun at 1 AU is 44.5 km, but if you launch a ship from Earth at 14.9 km, after you've escaped Earths' gravity, that's enough to escape the solar system.
galaxy - Where does the Milky Way end? - Astronomy Stack …
From Wikipedia's Milky Way page: Surrounding the Galactic disk is a spherical Galactic Halo of stars and globular clusters that extends further outward, but is limited in size by the orbits of two Milky Way satellites, the Large and the Small Magellanic Clouds, whose closest approach to the Galactic center is about 180,000 ly (55 kpc).[51]
distances - Are the viewable nebulae only in our galaxy?
Oct 24, 2018 · Nebulae called extra-galactic nebulae are nebulae outside of our galaxy. They aren't common, but we can see them. 2) Most of the ones we can see, such as the Helix nebula or the Orion nebula, are in our galaxy, but the ones outside of our galaxy are just more harder to see - there is a same dispersion of nebulae in our galaxy than in other ...
solar system - Is it true that we see the center of the milky-way for ...
Jul 15, 2020 · Since we are located in one of the arms of the Milky way, the center of the galaxy should be in one direction from our location, while in the other direction, we stare into the "other side". So at nights as we are in the orbit area that is between the sun and the center of the galaxy we are able to see the center (the "milky-way"), while when ...
What specific parts of the Milky Way do we see when we look up?
Sep 7, 2017 · So, to sum up, the answer to my question is that on a clear night, in the right position, with the naked eye you can see the central bulge of the Milky Way galaxy, even though it's up to 26,000 light years from Earth. You can't identify the particular spiral arm that you are seeing, in any direction, as such.
galaxy - Do all the stars visible to the naked eye belong to Milky …
May 8, 2016 · But even though the Large Magellanic Cloud is the second or third closest external galaxy, S Doradus is still too far away from Earth to be seen with the naked eye from Earth. O fall the stars that always or sometimes are intrinsically brighter than S Doradus, only the variable Eta Carinae, in our own Milky Way Galaxy, is close enough to Earth ...