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David Kipping

๐Ÿ‘ค Speaker
See mentions of this person in podcasts
3715 total appearances

Appearances Over Time

Podcast Appearances

Lex Fridman Podcast
#355 โ€“ David Kipping: Alien Civilizations and Habitable Worlds

Cosmologists, star formation astronomers, those of us studying exoplanets, those of us wanting to study the ultra-deep fields and the origin of the first galaxies, the expansion of the universe.

Lex Fridman Podcast
#355 โ€“ David Kipping: Alien Civilizations and Habitable Worlds

Everyone has to share this resource and

Lex Fridman Podcast
#355 โ€“ David Kipping: Alien Civilizations and Habitable Worlds

But we could potentially each have one JWST each that is maybe just studying a handful of the brightest exoplanet stars and measuring their atmospheres.

Lex Fridman Podcast
#355 โ€“ David Kipping: Alien Civilizations and Habitable Worlds

This is important because we talked about this planet TRAPPIST-1e earlier.

Lex Fridman Podcast
#355 โ€“ David Kipping: Alien Civilizations and Habitable Worlds

that planet, if JWCC stared at it and tried to look for biosignatures, by which I mean oxygen, nitrous oxide, methane, it would take it an order of 200 transits to get even a very marginal 2.5-sigma detection of those, which basically nobody would believe with that

Lex Fridman Podcast
#355 โ€“ David Kipping: Alien Civilizations and Habitable Worlds

And 100 transits, I mean, this thing transits once every six days, so you're talking about sort of four years of staring at the same star with one telescope.

Lex Fridman Podcast
#355 โ€“ David Kipping: Alien Civilizations and Habitable Worlds

There'd be some breaks, but it'd be hard to schedule much else because you'll have to continuously catch each one of these transits to build up your signal-to-noise.

Lex Fridman Podcast
#355 โ€“ David Kipping: Alien Civilizations and Habitable Worlds

And so JWST is never going to do that.

Lex Fridman Podcast
#355 โ€“ David Kipping: Alien Civilizations and Habitable Worlds

In principle, technically, JWST could technically have the capability of just about detecting a biosignature on an Earth-like planet around a non-sun-like star.

Lex Fridman Podcast
#355 โ€“ David Kipping: Alien Civilizations and Habitable Worlds

But still, impressively, we have basically the technology to do that, but we simply cannot dedicate all of its time practically to that one resource.

Lex Fridman Podcast
#355 โ€“ David Kipping: Alien Civilizations and Habitable Worlds

And so Starship opens up opportunities like that of mass-producing

Lex Fridman Podcast
#355 โ€“ David Kipping: Alien Civilizations and Habitable Worlds

these kinds of telescopes, which will allow us to survey for life in the universe, which of course is one of the grand goals of astronomy.

Lex Fridman Podcast
#355 โ€“ David Kipping: Alien Civilizations and Habitable Worlds

It's a really difficult process.

Lex Fridman Podcast
#355 โ€“ David Kipping: Alien Civilizations and Habitable Worlds

I don't envy the TAC that are gonna have to make this decision.

Lex Fridman Podcast
#355 โ€“ David Kipping: Alien Civilizations and Habitable Worlds

We call it the TAC, the Time Allocation Committee that make this decision.

Lex Fridman Podcast
#355 โ€“ David Kipping: Alien Civilizations and Habitable Worlds

And I've served on these before and it's very difficult.

Lex Fridman Podcast
#355 โ€“ David Kipping: Alien Civilizations and Habitable Worlds

I mean, typically for Hubble, we were seeing at least 10, sometimes 20 times the number of proposals for telescope time versus available telescope time.

Lex Fridman Podcast
#355 โ€“ David Kipping: Alien Civilizations and Habitable Worlds

For JDST, there has been one call already that has gone out.

Lex Fridman Podcast
#355 โ€“ David Kipping: Alien Civilizations and Habitable Worlds

We call it cycle one.

Lex Fridman Podcast
#355 โ€“ David Kipping: Alien Civilizations and Habitable Worlds

And that was oversubscribed by, I think something like six to one, seven to one.