The halo of the Milky Way is old. You’ve probably heard that a million times. But can we know more about its age than simply “it’s old”? Yes, we can — and that leads to interesting results!
Image credits: NASA/CXC/M.Weiss/Ohio State/A Gupta et al.
The largest structures of the universe lie within.
Theres trouble brewing in the field of cosmology, as astrophysicists attempt to understand the latest measurements of the Hubble constant.
White dwarf stars are the final evolutionary state of most stars. They are everywhere in the Galaxy and are relatively easy to model. So can we learn about our Galaxy solely by studying them? The authors of today’s paper show us a way.
Image credits: ESO/Y. Beletsky.
A search expedition on the lookout for tidal disruption events led to something else altogether.
How did the universe go from being neutral and opaque to transparent and reionized at z ~ 6? Today’s paper gives us some observational evidence for what might be responsible.