Eduardo looks at stars through his telescope. He says that the star Sirius is brighter than the star Rigel. In reality, Rigel has a greater absolute brightness than Sirius. What can explain Eduardos observation?

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Eduardo looks at stars through his telescope. He says that the star Sirius is brighter than the star Rigel. In reality, Rigel has a greater absolute brightness than Sirius. What can explain Eduardo’s observation?

A	Sirius is much closer to Earth than Rigel.
B	Sirius is a hotter star than Rigel.
C	Rigel is much closer to Earth than Sirius.
D	Rigel is a hotter star than Sirius.

Explanation:

Detailed explanation-1: -A star’s brightness also depends on its proximity to us. The more distant an object is, the dimmer it appears. Therefore, if two stars have the same level of brightness, but one is farther away, the closer star will appear brighter than the more distant star-even though they are equally bright!

Detailed explanation-2: -Which statement most accurately describes the relationship between the color and temperature of stars? yellow stars are cooler than red.

Detailed explanation-3: -Venus shines so brightly that it is the first “star” to appear in the sky after the Sun sets, or the last to disappear before the Sun rises. Its orbital position changes, thus causing it to appear at different times of the night throughout the year.

There is 1 question to complete.

GENERAL KNOWLEDGE

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