Proxima Centauri b Found: The Closest Earth-like Planet to Earth

The view from Proxima Centauri b.

Long Rumored, Finally Announced The rumors have been floating around for weeks about a supposed planet orbiting Proxima Centauri — the closest star to the Sun. That’s a star visible (through a telescope) from the Southern Hemisphere in the constellation Centaurus. It’s part of a triple system, headlined by Alpha … Continue reading

The Rosetta Mission at Comet 67P Will Soon End

UP close and personal with Comet 67P/Churyumov-Gerasimenko.  Courtesy Rosetta/ESA.

Studying a Comet Long Term I’ve been a comet fan since my grad school days. That was when I got pointed at Comet Halley and told, “study these images, and let’s figure out what’s happening with the plasma tail”. So, I pored over images of the comet taken from 1985-1986. … Continue reading

NASA: The Continuing Solar System Missions

Where Pluto is -- roughly at the position of Pluto, and headed for PT1 (2014 MU69). Courtesy New Horizons.

Beyond Pluto, Orbiting Ceres, and Circling Mars and the Moon Well, it’s official: New Horizons has the official go-ahead for an extended mission to the object 2014 MU69 that lies along its current path out through the Kuiper Belt. Mind you, the spacecraft was going to head that way anyhow, … Continue reading