TRAPPIST - 1 Update 02/24/17 Tides without Moons!

TL;DR

Scientists believe that two planets in the TRAPPIST-1 star system have a high likelihood of having liquid water and the potential for life.

Transcript

This is an update in my continuing coverage of the intriguing star system called TRAPPIST - 1 that includes no less than seven earth-like rocky planets, see my first video update on that on this channel for the back story. In the few days since NASA's press conference, a clearer picture is emerging on just how bizarre yet familiar this star system ... Read More

Key Insights

• 🤩 The TRAPPIST-1 star system contains seven earth-like rocky planets.
• 💁 The planets formed far from the star and migrated inward, suggesting they formed in an area rich in water ice.
• 🤩 Despite being close to their star, the presence of a strong magnetic field and possible ozone layer may offer some protection from radiation.
• 🖤 Tidal effects created by the planets themselves could compensate for the lack of moons in the system.
• 💦 Potential for life in the system relies on the presence of liquid water, tidal pools, and the possibility of panspermia.
• 👻 The exchange of materials and impacts among the planets could have allowed life to spread throughout the system.
• 🥃 The proximity of the planets makes them appear larger in each other's skies, increasing the likelihood of material exchange.

Questions & Answers

Q: What is the potential for liquid water on the planets in the TRAPPIST-1 system?

Scientists believe there is a high likelihood for liquid water on two of the planets, and possibly all seven, depending on atmospheric conditions and the presence of water ice during their formation.

Q: How do the planets in the system form and migrate?

The current models suggest that the planets formed far from the star and migrated inward over time, possibly due to gravitational interactions and forces from the disc of debris surrounding the young star.

Q: How are the planets protected from harmful radiation?

The presence of a strong magnetic field and an ozone layer, similar to Earth, may provide some protection against harmful radiation for the planets in the TRAPPIST-1 system. Further study is needed to confirm this.

Q: How could life potentially spread among the planets in the TRAPPIST-1 system?

If microbial life developed on one planet, it is possible that impacts from asteroids could transport debris containing dormant life to other planets through a process called panspermia. This could have led to the spread of life throughout the system.

Summary & Key Takeaways

• Two planets in the TRAPPIST-1 system have a high likelihood of having liquid water, making them potentially habitable.

• The planets in the system formed far from the star and migrated inward, indicating they may have formed in an area rich in water ice.

• The proximity of the planets to the star and the presence of a strong magnetic field and ozone layer are factors that could determine their habitability.