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Everything about Messier 81
Spiral galaxy in the constellation Ursa Major
Messier 81 (also known as NGC 3031 or Bode's Galaxy) is a grand design spiral galaxy about 12 million light-years away in the constellation Ursa Major. It has a D25 isophotal diameter of 29.44 kiloparsecs (96,000 light-years). Wikipedia →
🧭 Start here: a 6-step reading path
- Read the overview: Messier 81A 5-minute orientation
- Skim a recent paper: SN 2023ixf in Messier 101: Photo-ionization of Dense, Close-in Circumstellar Material in a Nearby Type II SupernovaInfluential work since 2022
- Pick up a classic book: Messier 81The most-reprinted book on the subject
- Read the landmark paper: The Resolution of Messier 32, NGC 205, and the Central Region of the Andromeda Nebula.Cited 316 times
- Go sideways: SN 1993JA closely related topic
- Go sideways: Messier 74A closely related topic
📖 Definitions
No dictionary entry for this exact phrase.
🗂️ The subject at a glance
🏆 Landmark papers (most cited)
The Resolution of Messier 32, NGC 205, and the Central Region of the Andromeda Nebula.
On Synchrotron Radiation from Messier 87.
H I KINEMATICS AND DYNAMICS OF MESSIER 31
The White Dwarf Cooling Sequence of the Globular Cluster Messier 4
A spiral nebula as a stellar system, Messier 31.
A wide-field H I mosaic of Messier 31
🆕 Influential since 2022
SN 2023ixf in Messier 101: Photo-ionization of Dense, Close-in Circumstellar Material in a Nearby Type II Supernova
SN 2023ixf in Messier 101: A Variable Red Supergiant as the Progenitor Candidate to a Type II Supernova
The dusty and extremely red progenitor of the type II supernova 2023ixf in Messier 101
Photon Ring Symmetries in Simulated Linear Polarization Images of Messier 87*
SN 2023ixf in Messier 101: The Twilight Years of the Progenitor as Seen by Pan-STARRS
📚 Books worth reading
- 📕Messier 81Rae Larson · 2018
- 📕Addition au mémoire sur la comète de l762Charles Messier · 1768
Ranked by number of editions on Open Library, a rough measure of how lasting a book is.
🔗 Related topics
- SN 1993J SN 1993J was a supernova in Bode's Galaxy. It was discovered on 28 March 1993 by amateur astronomer Francisco Garcia Diaz in Lugo, Spain. At the time,…
- Messier 74 Messier 74 (also known as NGC 628 and Phantom Galaxy) is a large spiral galaxy in the equatorial constellation Pisces. It is about 32 million light-years…
- Messier 59 Messier 59 or M59, also known as NGC 4621, is an elliptical galaxy in the equatorial constellation of Virgo. It is a member of the Virgo Cluster, with…
- Pinwheel Galaxy The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on, counterclockwise intermediate spiral galaxy located 21 million light-years…
- Messier 66 Messier 66 or M66, also known as NGC 3627, is an intermediate spiral galaxy located around 31 million light years from Earth in the equatorial half of…
- Messier 83 Messier 83 or M83, also known as the Southern Pinwheel Galaxy and NGC 5236, is a barred spiral galaxy approximately 15 million light-years away from Earth…
- Messier 82 M82 Galaxy Messier 82 (also known as NGC 3034, Cigar Galaxy or M82) is a starburst galaxy approximately 12 million light-years away in the constellation…
- NGC 2403 NGC 2403 is an intermediate spiral galaxy in the constellation Camelopardalis. Alternatively, it is known as Caldwell 7. It is an outlying member of the…