exoplanets

Tag archives for exoplanets

Distant Cousins: Kepler-186f

Big Eyed Beans from Venus – Captain Beefheart and his Magic Band! Cool. Literally Comparable to Mars in effective temperature, bit larger than Earth, probably slightly more massive than Earth (mean density could be lower), atmosphere unknown. Might well have extensive surface regions with persistent liquid water.

The final session in the online discussion of the NASA Astrobiology Roadmap is today from 4-5 pm eastern. Go to Astrobiology Future to sign in to the live web chat. Questions and comments will be taken both from call-ins and from written questions. The online discussion will be moderated by Dr Francis McCubbin from UNM,…

Planets, planets everywhere and on some there will be drops to drink. An interesting confluence of research occurred over the last few months, leading to: “A revised estimate of the occurrence rate of terrestrial planets in the habitable zones around Kepler M-dwarfs” by Ravi kumar Kopparapu PSU (arXiv), ApJLetters in press Bottom line: about half…

exoplanetology sundries

There were a number of interesting results reported today, the start of what promises to be an interesting week: IR spectra of HR 8799 planets – Scharf at SciAm blogs reports on the Oppenheimer et al paper using the P1640 at the Palomar telescope. Their interpretation of the rather low signal-to-noise low resolution spectra is…

The shadow of a shadow of a planet… and other fun Kepler discoveries Exoplanets in Multi-body Systems in the Kepler Era is a conference currently under way at the Aspen Center for Physics The meeting is very vibrant, with a mostly very young crowd of active researchers. There have been a number of very interesting…

Holy Schrödinger’s Cat!

Schrödinger’s Qu’ran – a 2012 thought experiment – in The Conversation, Matthew Bailes updates a classic paradox… “…a physicist could extend this thought experiment to write a php script that would randomly download one of the Bible, Qur’an or even a classical quantum mechanics textbook to the iPad…” On the Dispositive Null in the Literature…

To Do:

Given ηEarth=1 Find more terrestrial exoplanets. Find habitable terrestrial exoplanets. Find inhabited terrestrial exoplanets. Go visit. Consider the following snippets: Kepler discover 5 planets orbiting inside 0.1 AU Kepler: A Transiting Circumbinary Planet in a Quadruple Star System Terrestrial mass planet discovered around α Cen B Kepler exoplanet survey jeopardized Kepler has lost one of…

Hello neighbour

α Centauri B, a mere 4 lightyears away has a terrestrial planet orbiting it. α Cen B b The most interesting aspect of the discovery may be the inferences we can make rather than the planet itself. The discovery by the Geneva Observatory team using the HARPS spectrograph is a wonderful example of precision high…

linkedy links I

time for all new linkedy links here at the new digs Quantum Frontiers – a new blog from the Institute for Quantum Information and Matter, with kickoff by John Preskill hisself. Question of the day: explain quantum mechanics in five words My attempt: Probability Amplitudes, Observables don’t Commute Good to know John still does khakis…

Comparative Exoplanetology

Why do we need to spend any more effort on extra-solar planets? We found some, they’re there. Lumps of rocks, gasballs. We’re done, right? This, loosely paraphrased, was a serious question I got last week. The context was a question of why I was spending serious effort on exoplanet research, rather than focusing exclusively on…