Why can't we see Venus at night but at dawn and dusk?

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In summary, Venus is closer to the sun than Earth, making it harder to see at night because it is often hidden behind the Earth. This is also true for Mercury, which is even closer to the sun.
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touqra
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Why can't we see Venus at night but at dawn and dusk?
 
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Welcome to Physics Forum, touqra!

Well, sometimes you can see Venus later than dusk earlier than dawn, but you are correct that, when visible, Venus is always pretty close to those times.

This is because Venus is closer to the sun than Earth. Try this...draw 2 concentric circles...the inner circle is Venus' orbit, the outer circle is Earth's orbit and the sun is a dot in the middle. Now imagine yourself on a dot (the Earth) on the outer circle. Night time is when you are facing outward from the circles (facing away from the sun). Since Venus is on the inner circle, it's harder for you to catch a glimpse of it because it's hidden behind the other side of the Earth that you're standing on.

Mercury is even closer to the sun than Venus and as you would now expect, it's even harder to catch a glimpse of than Venus. Mercury pretty much rises/sets right before/after the sun.
 

1. Why can't we see Venus at night?

Venus is an inner planet and is closer to the sun than Earth. When the sun sets on Earth, Venus is still in the sky but is not visible because it is too close to the sun's glare.

2. Why can we see Venus at dawn and dusk?

During dawn and dusk, the sun is below the horizon and the sky is darker. This allows Venus to become visible in the sky, even though it is still close to the sun's glare.

3. Can we ever see Venus at night?

Yes, Venus can sometimes be visible in the night sky if it is at a certain angle from the sun. This usually happens during its inferior conjunction, when it is directly between the Earth and the sun.

4. Why does Venus appear brighter than other stars?

Venus is often referred to as the "morning star" or "evening star" because it can appear very bright in the sky. This is because of its close proximity to Earth and its thick cloud cover, which reflects a significant amount of sunlight back to us.

5. Are there other planets that we can see at dawn and dusk?

Yes, Mercury is also an inner planet and can sometimes be visible at dawn and dusk for similar reasons as Venus. Mars, Jupiter, and Saturn can also be visible during these times, but they are outer planets and appear further away from the sun in the sky.

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