Which famous scientist first used a telescope for astronomical observation?

The James Webb Space Telescope will study

What was the first telescope built by NASA?

The thin red rim seen around the sun during a total solar eclipse is called the

Streams of electrons and protons that shoot out from the sun's coraona make up the solar

The mass of a star can be determined by studying

The difference in brightness of two stars with the same surface temperature is attributable to their

All stars, regardless of size, eventually

When a main sequence star has exhausted the fuel in its core, it becomes a

Light cannot escape the intense gravitational pull of a

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