The First Technique That Allowed Astronomers to Find Exoplanets Involved

question 26

Multiple Choice

The first technique that allowed astronomers to find exoplanets involved:

• A) photographing the planets using infrared waves
• B) looking for the decrease of light from the star during a transit of the planet across its disk
• C) sending a very small spacecraft to the exoplanet to take close-up images
• D) measuring changes in the radial velocity (Doppler shift) of the star caused by the pull of orbiting planets
• E) simply taking a visible light photo of the planet around the nearest star; it wasn't that hard

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Definitions:

Downward Incision

The erosional process by which a river cuts deeper into its bed, often leading to the formation of a canyon or gorge.

Erosion

The process by which natural forces like water, wind, ice, and gravity wear away and break down earth materials, transporting them from one place to another.

Stream Deposition

The process by which sediment carried by a stream is laid down or deposited in new locations, often resulting in the formation of deltas and alluvial fans.

Broad Plains

Expansive, flat areas of land with minimal elevation change, often found in the interior regions of continents.