3 Solar Systems Scientists Still Don’t Understand

The video explores the complexities of solar system formation, focusing on three unique systems: HR8799, 2Mass, and Trappist-1. Each system challenges existing models of planetary formation, such as accretion and fragmentation. HR8799's gas giants defy current theories, while 2Mass's distant orbit raises questions about its formation. Trappist-1's closely packed planets suggest alternative formation processes. These discoveries prompt scientists to refine their models, highlighting the evolving nature of astronomical research.

What is the initial step in the formation of a solar system according to current scientific understanding?

• Migration of planets inward

• Creation of a dense atmosphere

• Collapse of a gas cloud into a disc

• Formation of a solid core

Which method of planet formation involves particles of dust clumping together to form a solid core?

• Fragmentation

• Accretion

• Pebble accretion

• Gas capture

What was the initial belief about the 2Mass object when it was discovered in 2009?

• It was a black hole

• It was a rogue planet

• It was a binary star system

• It was a comet

How far is the 2Mass planet from its star?

• 10 trillion kilometers

• 100 million kilometers

• 1 trillion kilometers

• 1 billion kilometers

What is unique about the orbits of the planets in the Trappist-1 system?

• They are all in elliptical orbits

• They are all larger than Earth

• They are all gas giants

• They are all closer than Mercury is to the Sun

What was the proposed explanation for the formation of the Trappist-1 planets in 2017?

• Pebble-sized debris migrated inward

• They formed from a single large collision

• They were captured from another star

• They formed from a dense gas disc

Why are scientists particularly interested in the Trappist-1 system?

• Its potential habitability

• Its proximity to Earth

• Its large number of gas giants

• Its unusual star type