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Astronomy
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When your friend flies by you in a spaceship at half the speed of light, you observe that

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Beverley Smith
Beverley SmithLv2
5 Mar 2020
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Related questions

Why do astronomers need different telescope designs to observe across the electromagnetic spectrum?

A) New telescopes incorporate new technology to increase their efficiency.

B) Telescopes have to adapt to the greater distortion of the atmosphere at shorter wavelengths.

C) Photons of different energy behave differently and require different collection strategies.

D) Light pollution is worse at radio wavelengths than visible wavelengths.

E) Astronomers and engineers enjoy the challenge of making new telescope designs.

Which of the following statements about the celestial equator is true at all latitudes?

A) It extends from your horizon due east, through your zenith, to your horizon due west.

B) It lies along the band of light we call the Milky Way.

C) It cuts the dome of your sky exactly in half.

D) It represents an extension of the earth's equator onto the celestial sphere.

E) It extends from your horizon due north, through your zenith, to your horizon due south.

If stars existed but galaxies did not:

(a) we would probably still exist anyway.
(b) we would not exist because life on Earth depends on the light of galaxies.
(c) we would not exist because we are made of material that was recycled in galaxies.

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