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The Owl Nebula (also known as Messier 97, M97 or NGC 3587) is a planetary nebula approximately 2,030 light years away in the constellation Ursa Major. [2] Estimated to be about 8,000 years old, [ 6 ] it is approximately circular in cross-section with a faint internal structure.
[2] [35] Every nebula begins with a certain amount of angular momentum. Gas in the central part of the nebula, with relatively low angular momentum, undergoes fast compression and forms a hot hydrostatic (not contracting) core containing a small fraction of the mass of the original nebula. [38] This core forms the seed of what will become a star.
The rate of living theory postulates that the faster an organism's metabolism, the shorter its lifespan. First proposed by Max Rubner in 1908, the theory was based on his observation that smaller animals had faster metabolisms and shorter lifespans compared to larger animals with slower metabolisms. [ 1 ]
Samples of organic matter returned from the asteroid Bennu support the theory that asteroids could have brought the building blocks of life to Earth. Scientists find a 'next step on a pathway to ...
Owl Nebula: M97: NGC 3587: 1781 2.6 (approx.) 9.9 Ursa Major: Twin Jet Nebula or Butterfly Nebula M2-9: 1947 2.1 14.7 Ophiuchus: NGC 7026: 1873 5.6 10.0 Cygnus: Butterfly Nebula: NGC 2346: 1802 3.9 (approx.) 11.9 Monoceros: Abell 39: 1955 6.8 (approx.) 13.7 Hercules: Jones-Emberson 1 / Headphone Nebula: PK 164+31.1 1939 1.6 (approx.) 14.0 Lynx ...
The average life expectancy in the U.S. is 77.5 years, according to the Centers for Disease Control and Prevention. But Americans outlive their health spans by 12.4 years, the study found.
The Southern Owl Nebula (PLN 283+25.1, ESO 378-1) is a planetary nebula located in the constellation Hydra. The nebula lies at a distance of 2,030 light years from Earth. It is named so because of its resemblance to the Owl Nebula in Ursa Major. [2] The nebula is notably symmetric, round, and has a diameter of approximately four light-years ...
The metaphorical clock measures how close humanity is to self-destruction, because of nuclear disaster, climate change, AI and misinformation.