Facts about Whirlpool Galaxy

1. 07

   Radio observations detect powerful jets of energy extending 35,000 light-years from M51's central black hole, making the Whirlpool Galaxy one of the most energetically active systems in the local universe.

   Whirlpool GalaxyMay 14shareastronomymeasurementenergy
2. 06

   The Whirlpool Galaxy's two spiral arms contain regions of intense ultraviolet radiation where massive stars, some exceeding 100 solar masses, are actively forming within compressed gas clouds.

   Whirlpool GalaxyMay 14shareastronomystellarformation
3. 05

   Observations from the Hubble Space Telescope reveal that the Whirlpool Galaxy produces new stars at a rate of approximately 3 solar masses per year, making it notably active in stellar formation.

   Whirlpool GalaxyMay 14shareastronomystarformationmeasurement
4. 04

   M51's smaller companion galaxy NGC 5195 has been gravitationally interacting with the Whirlpool for roughly 100 million years, triggering the dramatic spiral density waves visible today.

   Whirlpool GalaxyMay 14shareastronomygravityinteraction
5. 03

   A supermassive black hole at the Whirlpool Galaxy's center harbors approximately 40 million times the mass of our Sun, actively pulling in surrounding material.

   Whirlpool GalaxyMay 14shareastronomyphysicsblackholes
6. 02

   In 1773, Charles Messier catalogued the Whirlpool Galaxy as M51, making it the first spiral galaxy ever identified by astronomers.

   Whirlpool GalaxyMay 14shareastronomyhistorydiscovery
7. 01

   Approximately 23 million light-years away, the Whirlpool Galaxy spans 60,000 light-years in diameter with two prominent spiral arms visible through telescopes.

   Whirlpool GalaxyMay 14shareastronomymeasurementspace