Exoplanets and Brown Dwarfs

What is the term used to describe the motion of a star making a small circle due to the gravitational pull of a planet?

• Elliptical Motion

• Circular Motion

• Reflexive Motion

• Rotational Motion

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

Why is it difficult to spot exoplanets directly?

• They are too bright.

• They are too close to their parent star.

• They are too large.

• They are too fast.

What natural thought arises when considering the vast number of stars in the sky?

• Are there planets circling those stars?

• Are there black holes near those stars?

• Are those stars moving away?

• Are those stars all the same size?

What analogy is used to explain reflexive motion?

• Two cars racing on a track

• Two kids spinning around while holding hands

• Two birds flying in the sky

• Two boats sailing in the ocean

Who were the astronomers that discovered the first exoplanets in 1992?

• Aleksander Wolszczan and Dale Frail

• Michel Mayor and Didier Queloz

• Carl Sagan and Neil deGrasse Tyson

• Edwin Hubble and Stephen Hawking

What type of star were the first exoplanets found orbiting?

• A pulsar

• A red giant

• A white dwarf

• A main-sequence star

What was the name of the star around which Michel Mayor and Didier Queloz found a planet in 1995?

• 51 Peg

• Alpha Centauri

• Betelgeuse

• Proxima Centauri

What method did Mayor and Queloz use to detect the planet orbiting 51 Peg?

• Doppler shift

• Transit method

• Direct imaging

• Gravitational microlensing

What is the orbital period of the planet 51 Peg b?

• 4.23 days

• 10 days

• 365 days

• 30 days

Tags

NGSS.HS-ESS1-4

How far is 51 Peg b from its parent star compared to Mercury's distance from the Sun?

• 8 million km

• 55 million km

• 100 million km

• 150 million km

Tags

NGSS.HS-ESS1-4