The best bits from the NASA AMA following the announcement of Trappist-1 exoplanets

Nasa just announced the discovery of 7 Earth sized exoplanets in orbit around the ultracool white dwarf star Trappist-1. All the planets are in orbit closer to the star than Mercury is to our Sun. If the star was as hot as our Sun, the planets would have been hot, dry deserts. However, as the star is much cooler, the planets bask in a comfortably warm temperature. Three of the planets are in the habitable zone, which means liquid water can exist on the surface. Following the announcement, Nasa scientists responded to questions in a Reddit Ask Me Anything (AMA) thread. Here are the best questions and responses.

Comment from discussion We’re NASA scientists & exoplanet experts. Ask us anything about today’s announcement of seven Earth-size planets orbiting TRAPPIST-1! .

Comment from discussion We’re NASA scientists & exoplanet experts. Ask us anything about today’s announcement of seven Earth-size planets orbiting TRAPPIST-1! .

Comment from discussion We’re NASA scientists & exoplanet experts. Ask us anything about today’s announcement of seven Earth-size planets orbiting TRAPPIST-1! .

Comment from discussion We’re NASA scientists & exoplanet experts. Ask us anything about today’s announcement of seven Earth-size planets orbiting TRAPPIST-1! .

Comment from discussion We’re NASA scientists & exoplanet experts. Ask us anything about today’s announcement of seven Earth-size planets orbiting TRAPPIST-1! .

Comment from discussion We’re NASA scientists & exoplanet experts. Ask us anything about today’s announcement of seven Earth-size planets orbiting TRAPPIST-1! .

Comment from discussion We’re NASA scientists & exoplanet experts. Ask us anything about today’s announcement of seven Earth-size planets orbiting TRAPPIST-1! .

Comment from discussion We’re NASA scientists & exoplanet experts. Ask us anything about today’s announcement of seven Earth-size planets orbiting TRAPPIST-1! .