Astronomers Believe That the Stellar Disk Around the Star Beta

question 83

Multiple Choice

Astronomers believe that the stellar disk around the star Beta Pictoris contains a Jupiter-size planet. Why do they think this?

• A) The planet was imaged directly by the Hubble Space Telescope.
• B) Effects of the intense magnetic field of this planet can be detected by powerful radio telescopes.
• C) The gravitational effect of this planet has created an off-center disk of dust and gas around the star.
• D) The planet causes a measurable decrease in the brightness of Beta Pictoris when it transits across its disk.

---

Definitions:

Embryonic Development

The process by which an embryo forms and develops, from fertilization to the fetus stage.

Cotyledons

Embryonic leaves in seed-bearing plants, forming the first leaves to appear from a germinating seed.

Food Reserves

Nutrients stored by organisms to be used when external food sources are scarce.

Seed Dispersal

The mechanism by which seeds are spread from their parent plant to new locations, aiding in species spread and diversity.