Statements (71)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:galaxy
|
| gptkbp:contains |
gptkb:Messier_81
gptkb:Messier_82 gptkb:NGC_3077 gptkb:NGC_2976 |
| gptkbp:diameter |
approximately 100,000 light-years
|
| gptkbp:discovered_by |
gptkb:Johann_Elert_Bode
|
| gptkbp:distance_from_earth |
approximately 12 million light-years
|
| gptkbp:first_appearance |
1774
|
| gptkbp:governed_by |
gptkb:Messier_81
|
| gptkbp:has_historical_significance |
early observations of galaxies
|
| gptkbp:has_neighboring_groups |
gptkb:NGC_2403_group
|
| gptkbp:has_number_of_galaxies |
at least 4
|
| https://www.w3.org/2000/01/rdf-schema#label |
M81 group of galaxies
|
| gptkbp:is_associated_with |
X-ray emissions
galaxy mergers Hubble Space Telescope observations the Local Supercluster galactic winds |
| gptkbp:is_home_to |
gptkb:active_galactic_nuclei
gptkb:supernova_remnants various types of stars multiple dwarf galaxies many star-forming regions |
| gptkbp:is_influenced_by |
gptkb:dark_matter
cosmic expansion |
| gptkbp:is_involved_in |
gptkb:NGC_2403_group
the M82 group |
| gptkbp:is_known_for |
its large size
its gravitational interactions its bright galaxies its rich structure its interaction with the intergalactic medium |
| gptkbp:is_located_near |
the North Celestial Pole
the North Galactic Pole |
| gptkbp:is_observed_in |
optical wavelengths
space telescopes radio wavelengths infrared wavelengths ground-based telescopes |
| gptkbp:is_part_of |
gptkb:Laniakea_Supercluster
gptkb:Local_Supercluster the Virgo Supercluster the observable universe the Great Attractor region the Cosmic Web the Laniakea Galaxy Supercluster |
| gptkbp:is_related_to |
gptkb:the_Local_Group
|
| gptkbp:is_studied_for |
stellar populations
cosmological implications galaxy formation theories galaxy interactions dark energy effects galaxy evolution. |
| gptkbp:is_studied_in |
gptkb:astronomy
|
| gptkbp:is_visible_from |
yes
northern hemisphere amateur astronomy |
| gptkbp:located_in |
Ursa Major constellation
|
| gptkbp:mass |
approximately 10^12 solar masses
|
| gptkbp:notable_feature |
starburst activity in Messier 82
|
| gptkbp:notable_member |
gptkb:Messier_81
gptkb:Messier_82 gptkb:NGC_3077 gptkb:NGC_2976 |
| gptkbp:redshift |
0.0005
0.0033 |
| gptkbp:type |
spiral galaxy group
|
| gptkbp:bfsParent |
gptkb:M81
gptkb:M82 |
| gptkbp:bfsLayer |
5
|