Posts tagged with: exoplanets

Exocast-54c – Exoplanet News

The exocast team covers the latest news in Exoplanets including a critical look at the so called “Hycean” worlds recently proposed to be the best places to look for life, a detailed run-down of the Elements magazine issue on “Geoscience beyond the solar system”, and some new and refined exoplanet measurements and discoveries.

Exocast-54b: Observing Exoplanets from the Ground

In this episode the exocast team discuss how we observe exoplanets from the ground, how different it is from space, where we put the telescopes and why. The team start by sharing their journeys to telescopes around the world to make observations, and discuss the different bands in the atmosphere that we observe in. The main difference between ground- and space-based observatories is their size, the instruments on some of the ground-based observatories are room

Exocast-53 c – Exoplanet News

As always, the exocast team covers a few extraordinary recent exoplanetary results in Exocast-53 c: First off, Hannah briefly describes the problem with (and solution to) NASA Hubble’s elderly on-board computer Andrew details a few interesting results that emerged from the 2021 Goldschmidt conference, including updates on the bombardment of the early Earth, ancient methanogenic fossils, gasses trapped in diamonds, and new constraints on snowball earth. Hugh describes the ESA CHEOPS mission, and its serendipitous

Exocast-53b: Interview with Elizabeth Tasker

In this episode the Exocast crew are excited to talk with expert science communicator, JAXA space scientist, and master of computer simulations, Professor Elizabeth Tasker. During the hour long discussion we talk about how Elizabeth transitioned into planetary research from a degree and PhD in galactic simulations, the journey from the UK to the US, Canada and now in Japan. Where the idea for her popular science book The Planet Factory came from and why

Exocast-51b: Interview with Mark Marley

In this episode the Exocast gang are joined by veteran exoplaneteer Dr Mark Marley from NASA Ames. During a nearly hour-long discussion, we probe Mark’s experience of early exoplanet discovery and characterisation efforts in the 1990s, his work on clouds and atmospheric circulation models, ‘ice’ giants, brown dwarfs, his leadership role with the LUVOIR space telescope concept, as well as his cheerleading efforts during the Exocup.

Exocast-50c: Monthly Exoplanet News

In this month’s news rundown Hugh, Hannah, and Andrew provide a summary of three interesting papers that appeared on their radar during February/March 2021: Hugh takes a look at The Chemical link between stars and their rocky planets by Vardan Adibekyan and others. Andrew summarises Lithologic Controls on Silicate Weathering Regimes of Temperate Planets by Kaustubh Hakim and team. Hannah dons a thermal raincoat to cover Water on hot rocky exoplanets by Edwin Kite and Laura

Exocast-46b: Interview with Moiya McTier

This month Hugh, Andrew, and Hannah talk to astrophysicist, folklorist, and science communicator Moiya McTier. Moiya is an NSF graduate researcher at Columbia University in New York City and works to understand exoplanets from a galactic perspective. The Exocast team talks to Moiya about work from measuring the topography on an exoplanet by the effect that mountains and other features have in transit, all the way up to how the stars in the Milky Way

Exocast-45c: how many exoplanets are there?

In this episode, the team sits down to ponder the question how many exoplanets are there? At first, this might seem like a relatively straightforward question that can be answered by NASA’s Exoplanet Archive, but it becomes more daunting when considering, for example, the biases and limitations of our instruments that affect our ability to even detect and characterise many planets, how we define a ‘planet’, and whether or not we have surveyed enough stars

Exocast-44c: Can we ever image the surface of an exoplanet?

On this episode we ask the question: Can we ever image the surface of an exoplanet? Once we get all the definitions out of the way, like ‘what do we mean by map?’ and ‘what do we mean by surface?’, we take a deep dive into the realm of instrumentation to discuss the possibilities and limitations of our upcoming and near-future exoplanet imaging technologies. We touch on some of the avenues that astronomers & engineers

Exocast-42b: Special Guest Dr Stephen Kane

Our final bite-size episode for this month features Andrew, Hannah, and Hugh chatting with Dr Stephen Kane, Associate Professor of Planetary Astrophysics in the Departments of Earth and Planetary Sciences and Physics and Astronomy at the University of California, Riverside. Stephen tells us a little about his need to use all exoplanet detection techniques, his love for our hot and cloudy next-door neighbour Venus, and he tries to sneak two planets into our adopted exoplanet list, before settling on one

Exocast-42c – Water in the Universe

In the second of three mini-casts this month, Hannah, Hugh, and Andrew gather around the virtual table to discuss that weird and wonderful molecule: H2O! The importance of water to our lives is undeniable, but in this show we chat about what makes water so chemically unusual and important in the study of astrophysics, exoplanet astronomy, and astrobiology. http://media.blubrry.com/exocast/p/www.exocast.org/wp-content/uploads/2020/02/exocast_42_feature_water_jan2020-1.mp3Podcast: Play in new window | DownloadSubscribe: RSS

Exocast-40b: Brett Morris talks starspots & astrobiology, the #ExoCup2019 is underway, plus exoplanet news

Hugh chats with his colleague at the University of Bern Dr. Brett Morris about starspots and their effect on exoplanet detection and characterisation, his experience with an astrobiology mission right here on Earth, and he recounts an exciting day in Bern earlier this year. Andrew discusses the labels we apply to the worlds we find, and the gang debates the usefulness of the terms for exoplanet science. And Hannah reads ADS so you don’t have

Exocast-37b: Live at TESScon, an intro to planetary protection, & the month in exoplanet news

Quizmaster Hugh takes to the conference hall at the 1st TESS Science Conference (TESSCon) to test the attendees’ exoplanet knowledge! Andrew compiles a (not very) top secret report-out on planetary protection. And Hannah covers this month’s news including the detection of an exoplanet magnetic field, new planets from TESS, a Kepler-load of 350 new candidates, as well as advances in exoplanet population statistics and atmospheric characterization. http://media.blubrry.com/exocast/p/www.exocast.org/wp-content/uploads/2019/08/Exocast-37b_v1.mp3Podcast: Play in new window | DownloadSubscribe: RSS

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