Exactly how fast is the universe expanding?

more »
The collision of two neutron stars (GW170817) flung out an extraordinary fireball of material and energy that is allowing a a team of astrophysicists to calculate a more precise value for the Hubble constant, the speed of the universe's expansion. Previous estimates put the value between 66 and 90 km/s/Mpc, which this team refined to between 65.3 and 75.6 km/s/Mpc.
via Science Daily
Zazzle Space Exploration market place

New high-definition satellite radar can detect bridges at risk of collapse from space

more »
An early warning system to identify at-risk structures using Synthetic Aperture Radar (SAR) has been developed. The system could be applied to infrastructure projects including roads, railways and building developments at lower cost and greater accuracy than existing techniques.
via Science Daily
Zazzle Space Exploration market place

Interstellar iron isn't missing, it's just hiding in plain sight

more »
Cosmochemists have found that interstellar iron and carbon form a kind of linked molecule that cloaks the iron -- and helps stabilize large carbon molecules.
via Science Daily
Zazzle Space Exploration market place

New method may resolve difficulty in measuring universe's expansion

more »
Radio telescope observations have made it possible for astronomers to use mergers of neutron-star pairs as a valuable new tool for measuring the Universe's expansion.
via Science Daily
Zazzle Space Exploration market place

Supercomputer shows 'Chameleon Theory' could change how we think about gravity

more »
Supercomputer simulations of galaxies have shown that Einstein's theory of General Relativity might not be the only way to explain how gravity works or how galaxies form.
via Science Daily
Zazzle Space Exploration market place