The cosmic detective story
What on Earth is it
Subterranean fortresses
Mapping the unseen universe
007skaty The Bullet Cluster
When they crashed, the gas got stuck, but the dark matter sailed right through.
007skaty Using the virial theorem in 1933, Zwicky explained this missing gravity by proposing a massive, invisible substance called dark matter.
007skaty Her work at the Carnegie Institution showed invisible halos surround entire galaxies.
007skaty Drag dark matter around spinning galaxies to discover how this cosmic hug holds them together.
First dark matter: Swiss astronomer Fritz Zwicky coined 'dunkle Materie' in 1933 while studying the Coma Cluster.
A hypothetical form of matter that does not interact with light but is inferred from its gravitational effects. In 1970, astronomer Vera Rubin discovered that outer stars in spiral galaxies rotate unexpectedly fast, indicating unseen mass.
In 1933, which Swiss astronomer coined the German term 'dunkle Materie' to explain missing mass in the Coma Cluster?
By what factor did Fritz Zwicky calculate that the Coma Cluster's gravitational mass exceeded its visible mass?
In a typical spiral galaxy, how do the orbital speeds of outer stars compare to inner stars according to Vera Rubin's findings?
Which galaxy did astronomer Vera Rubin study in 1970 to provide the first clear evidence of flat galactic rotation curves?
What percentage of the total matter in the universe is estimated to be dark matter rather than ordinary visible matter?
According to Newtonian physics, what force should fling outer stars out of a galaxy if dark matter did not exist?
Which space telescope captured the hot, pink X-ray gas during the famous 2006 Bullet Cluster collision?