NGC 7000
NGC 7000 NGC 7000,The North America Nebula (or Caldwell 20) is an emission nebula in the constellation Cygnus, close to Deneb (the tail of the swan and its brightest star). It is named because its shape resembles North America. On October 24, 1786, William Herschel observing from Slough, England, …
NGC 1491
NGC 1491 NGC 1491, also known as LBN 794 or SH2-206, is an emission type bright nebula located about 9,800 light years away from Earth in the constellation of Perseus. The nebula gets its deep red coloration due to many massive stars (such as BD+50 866) embedded within NGC 1491 producing large amounts of ultraviolet radiation and ionizing the hydrogen gas that …
NGC 6888 Crescent Nebula
NGC 6888 Crescent Nebula The Crescent Nebula (also known as NGC 6888, Caldwell 27, Sharpless 105) is an emission nebula in the constellation Cygnus, about 5000 light-years away from Earth. It was discovered by William Herschel in 1792. It is …
NGC 7635 Bubble Nebula
NGC 7635 Bubble Nebula NGC 7635, also known as the Bubble Nebula, Sharpless 162, or Caldwell 11, is an H II region emission nebula in the constellation Cassiopeia. It lies close to the open cluster Messier 52. The “bubble” is …
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