From the perspective of planet hunters and planet characterizers, a desirable solar system to explore is one that is close to ours, that has a planet (or planets) in the star's habitable zone, and has a host star that is relatively quiet. This is especially important with the very common red dwarf stars, which are …
Continue reading "Close and Tranquil Solar System Has Astronomers Excited"
A SpaceX Falcon 9 rocket transporting the TESS satellite lifts off from launch complex 40 at the Cape Canaveral Air Force Station in Cape Canaveral, Fla., Wednesday, April 18, 2018. The space telescope will survey almost the entire sky, staring at the brightest, closest stars in an effort to find any planets that might be …
This column was written by my colleague Elizabeth Tasker, now at the Japan Aerospace Exploration Agency (JAXA), Institute of Space and Astronautical Sciences (ISAS). Trained as an astrophysicist, she researches planet and galaxy formation and also writes on space science topics. Her book, "The Planet Factory," came out last year. On January 5, 2010, NASA …
When the first exoplanet was identified via the radial velocity method, the Swiss team was able to detect a wobble in the star 51 Pegasi at a rate of 50 meters per second. The wobble is the star's movement back and forth caused by the gravitational pull of the planet, and in that first case …
Continue reading "Storming the One-Meter-Per-Second Barrier"
When the first exoplanet was identified via the radial velocity method, the Swiss team was able to detect a wobble in the star 51 Pegasi at a rate of 50 meters per second. The wobble is the star's movement back and forth caused by the gravitational pull of the planet, and in that first case …
Continue reading "Storming the One-Meter-Per-Second Barrier"
Seven years ago this month the Kepler spacecraft launched into space – the first NASA mission dedicated to searching for planets around distant stars. The goal was to conduct a census of these exoplanets, to learn whether planets are common or rare. And in particular, to understand whether planets like Earth are common or …
Seven years ago this month the Kepler spacecraft launched into space – the first NASA mission dedicated to searching for planets around distant stars. The goal was to conduct a census of these exoplanets, to learn whether planets are common or rare. And in particular, to understand whether planets like Earth are common or …
Astronomers have been trying for decades to find a planet orbiting Proxima Centauri, the star closest to our sun and so a natural and tempting target. Claims of an exoplanet discovery have been made before, but so far none have held up. Now, in a novel and very public way, a group of European astronomers …
Astronomers have been trying for decades to find a planet orbiting Proxima Centauri, the star closest to our sun and so a natural and tempting target. Claims of an exoplanet discovery have been made before, but so far none have held up. Now, in a novel and very public way, a group of European astronomers …
An earlier version of this article was accidently published last week before it was completed. This is the finished version, with information from this week's AAS annual conference. Let's face it: the field of exoplanets has a significant deficit when it comes to producing drop-dead beautiful pictures. We all know why. Exoplanets are just too …
Continue reading "How Will We Know What Exoplanets Look Like, and When?"
Many Worlds 