First Detection of the 21cm Cosmic Dawn Signal
Radio astronomers detect the first signature of a global 21cm signal with some interesting implications for dark matter.
How much does the Milky… weigh?
How do we measure the mass of our own galaxy? Today’s authors use simulations to compare (and improve) several methods.
How fast is dark matter?
Can observations of stars help to determine the local dark matter velocity?
DAMPE cosmic ray spectrum may shed light on dark matter
Today’s paper has implications for theories of dark matter and nearby pulsars.
What is the Most Massive Object in the Universe?
Trying to find the most massive galaxy cluster in the night sky can be hard. Comparing predictions of these masses to observed clusters? Even harder. An insight into the world of Halo Mass Functions and their tail-ends.
No Missing Satellites?
In the study of structure formation in the universe, the ‘missing satellite galaxies’ problem is said to be almost solved. Is today’s paper the final nail in the coffin?