When an exoplanet passes in front of a star along our line of sight, it can cause a transit, blocking a fraction of its parent star’s light. This has been the key component in exoplanet finding by missions like NASA’s Kepler and TESS, but is only the tip of the iceberg in exoplanet sciences. (Image credit: NASA / TESS)

Starts With A Bang Podcast #53: Exoplanets from Kepler to TESS and beyond

A fascinating podcast on the topic with NASA scientist Dr. Jessie Christiansen.

Ethan Siegel
1 min readFeb 7, 2020

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How many planets are out there in the Universe? How many stars have planets, and what kinds of planets do stars of various types have? How close are we to doing direct imaging, finding whether some of our Earth-like planets are potentially habitable or even inhabited? Are Super-Earths a real thing, or are all of the ones larger than our world more Neptune-like than we care to admit?

We’ve answered a whole slew of questions about exoplanets that we didn’t even know to ask a decade or two ago, and there’s so much more happening right now as well as on the horizon. Come get the scoop on the latest Starts With A Bang podcast, featuring the incredible Dr. Jessie Christiansen of NASA’s Exoplanet Science Institute!

The Starts With A Bang podcast is made possible by and releases early for Patreon supporters.

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Ethan Siegel

The Universe is: Expanding, cooling, and dark. It starts with a bang! #Cosmology Science writer, astrophysicist, science communicator & NASA columnist.