Red Dwarf Worlds

Red dwarfs are the most common stars in the universe. They constitute over 80% of all the stars in the Milky Way. And, they apparently live almost forever. The BIG question is: can they support worlds that harbor life? Join us tonight as we hear two different viewpoints regarding this interesting question.

[jolujo]

OOPS....Someone forgot the audio track

[rinthylab]

Would have been interesting to be able to see the Q&A as well.

[PoliticalJohn]

Dwarf stars of this type are known to be variable, thus ending any chance of habitable life around nearly all of them.

[ethorii]

Why do galaxies look white if most of their stars are red dwarfs. Because the white and blue stars overwhelm the orange and red ones?

[blindandwatching]

A civilization with minds like ours is rare. I suspect that there are only a few at a time and they are so far apart that they will never find each other.

[Kalumbatsch]

Are you fucking kidding me? Why has this been muted?

[TheFRiNgEguitars]

The young lady did not include a critical point about the Venusian atmosphere. It IS being stripped off by the solar wind at a very high rate. However the atmosphere is being replenished by the planet's geothermal activity, the release of noxious gases not habitable to intelligent life as we know it. If Venus had nitrogen/ oxygen atmosphere like Earth, and no magnetic field, the Venusian atmosphere would be thinner than that of Mars, or completely gone! So, it is not likely any planet near a red dwarf would have any life supporting atmosphere at all... being tidally locked or nearly so.

[bozo]

She was wrong about one thing: We will detect multiple instances of life within our lifetimes (5-15yrs?), or else we will discover that life is very rare.

[ellielikeswater]

I keep thinking of this video artist rendering of the planet at 5:41 being more likely around red dwarfs on this video /watch?v=RY1R4l4nsfw farther out from the habitable zone because one side is always receiving energy from it's star Kinda like Europa with partly defrosted star facing side maybe like .. Plus red wavelegths melt water ice.. ! with a mass larger than mars and below Earth

[Aluminata]

The chances of a Earth like planet with actual technically sophisticated creatures on it are astronomical! It needs to be a nearly perfectly circular orbit - which is the exception for orbital objects generally. It needs to be with in very much narrower zone of inhabitability than suggested by that diagram. It needs a decent sized satellite moon-also with a near circular orbit. It needs gas giants to soak up the excess solar system debris - definitely needs a healthy magnetosphere It needs to be close to Earth sized - to small and it would not keep an atmosphere - or a magnetosphere - for billions of year required to evolve creatures like us. Too big and the gravity and atmospheric pressure would allow only insect like creatures ... it needs sufficient land area - I suspect it is only because of the impact which created the moon that this planet is not submerged under many kilometers of ocean. It needs tectonic stability- with out too many super volcanoes or earth quakes. It needs to periodically emerge from an ice bound state. I also suspect that with out regular ice ages the soils will become depleted from minerals leached away by rain- resulting in low grade plants (weeds) and regular die backs and bush fires.
Balanced on a razor edge of fortuitous conditions - this planet is as near to a "miracle" as anything can ever be.

[orangeblueandlavenda]

what else is out there that glows red and could swing by earth?

[backstabbingsmithsonian]

Blablabla... UPDATE like every week since 1990 .... Berth of HHTP, & Hubble telescopes BLABLABLA I Love SCIENCE EVERYTHING! I can listen to Blablabla & Agree today just to disagree next week, Updates I love them !