Evidence that the moon was formed by impact between Earth and planet Theia

How did the Moon form? According to the prevailing hypothesis, a Mars-sized body known as Theia smashed into Earth. Herwartz et al. analyzed fresh basalt samples from three Apollo landing sites and compared them with several samples of Earth’s mantle. The oxygen isotope values measured in these lunar rocks differ significantly from the terrestrial material, Read more about Evidence that the moon was formed by impact between Earth and planet Theia[…]

How To Build A Quantum Telescope

Last month, physicists used this idea to build the world’s first entanglement-enhanced microscope that dramatically increases its resolution over purely classical instruments. They created entangled photons and used one to illuminate the object. The second photon can then give them information about the first that they use to increase the resolution of the resulting image. Read more about How To Build A Quantum Telescope[…]

First direct evidence of cosmic inflation

Gravitational waves squeeze space as they travel, and this squeezing produces a distinct pattern in the cosmic microwave background. Gravitational waves have a “handedness,” much like light waves, and can have left- and right-handed polarizations. “The swirly B-mode pattern is a unique signature of gravitational waves because of their handedness. This is the first direct Read more about First direct evidence of cosmic inflation[…]

Space Elevators: An Assessment of the Technological Feasibility and the Way Forward

This book addresses the simple and complex issues that have been identified through the development of space elevator concepts over the last decade. The report begins with a summary of those ideas in Edwards’ and Westling’s book The Space Elevator (2003). Out of these beginnings has risen a worldwide cadre focused upon their areas of Read more about Space Elevators: An Assessment of the Technological Feasibility and the Way Forward[…]

Last Space Shuttle Flight – STS-135. No replacement in sight.

Atlantis and its four astronauts left Earth for the final space shuttle mission, which will cap off an amazing 30-year program of exploration, which launched great observatories, built an International Space Station, and taught us more about how humans can live and work in space. With the International Space Station flying 220 miles high and Read more about Last Space Shuttle Flight – STS-135. No replacement in sight.[…]

most complete 3D map of universe revealed

Today, astronomers unveiled the most complete 3-D map of the local universe (out to a distance of 380 million light-years) ever created. Taking more than 10 years to complete, the 2MASS Redshift Survey (2MRS) also is notable for extending closer to the Galactic plane than previous surveys – a region that’s generally obscured by dust. Read more about most complete 3D map of universe revealed[…]