One large Milky Way galaxy or many galaxies? 100 years ago, a young Edwin Hubble settled astronomy’s ‘Great Debate.’
In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...
PBS7y
The Orion Nebula: A Star Nursery by Andrew Fraknoi
That fuzzy splotch, visible to the naked eye when it is really dark (and easily seen through binoculars) is the Orion Nebula. Throughout the nebula (which is about 30 light years wide), we see a ...
Mashable29d
Get lost in the clouds of the Orion Nebula with new NASA video
Spend three minutes getting lost in space. A video released by NASA this week shows the well-known Orion Nebula in a new way. The 3D visualization of the nebula allows the viewer to get a bird's ...
inforum24d
John Wheeler: The Orion constellation dominates the evening sky this time of year
The middle star in the dagger is actually not a star, but the Orion Nebula, which through a telescope is revealed to be a bright, gaseous cloud.