July 21, 2019

19.10.09: 32 New Exoplanets Revealed!

Anybody notice the exoplanet tally on our front page hop up to 402 this morning? That’s because the European Southern Observatory (ESO) revealed a stunning 32 (count em!) new exoplanets identified this morning at their conference at Porto, Portugal. The discoveries were thanks to HARPS, the High Accuracy Radial Velocity Planet Searcher, a sensitive spectrograph attached to the 3.6 meter telescope at La Silla. First installed in 2003, HARPS has thus far discovered 75 of the 400+ worlds now known, or nearly 25%! today’s haul represents the largest single day release. Any special firsts? Well, the grab bag of exo-worlds substantially increases the pool of “super-earths”, as well as three planets found orbiting metal deficient stars, something that may be cause for tweaking planetary formation theory a bit. HARPS is capable of measuring radial shifts as small as 2 miles per hour, an impressive feat. The gauntlet has now been thrown; will the Kepler space telescope rise to the challenge as it stares into Cygnus looking for exo-transits? Do we sense a “exoplanet-war” brewing on mountain tops and chat boards across the world? Stay tuned!