Scientists have long tried to explain the origin of a mysterious, large and anomalously cold region of the sky. In 2015, they came close to figuring it out as a study showed it to be a “supervoid” in which the density of galaxies is much lower than it is in the rest of the universe. However, other studies haven’t managed to replicate the result.
Low energy efficiency is already a major problem for petrol and diesel vehicles. Typically, only 20% of the overall well-to-wheel energy is actually used to power these vehicles. The other 80% is lost through oil extraction, refinement, transport, evaporation, and engine heat. This low energy efficiency is the primary reason why fossil fuel vehicles are emissions-intensive, and relatively expensive to run.
An international team of astronomers filmed a small, flashing black hole in our Milky Way using unique, specialized high-speed cameras. The stellar black hole feeds on material from a nearby star and flashes hundreds of times per second. The researchers publish their findings in the journal Monthly Notices of the Royal Astronomical Society Letters.
An international team of scientists has measured a new, higher value for the speed at which the universe expands. They used two massive galaxies as "gravitational lenses" to investigate the light from remote objects. The study was led by the Max Planck Institute for Astrophysics in Garching in Germany.
