Question

It is already known that the sky would have been black and the stars would have shown all day is there was no environment. But If there was not atmosphere on Earth, would the objects around us still be visible? Why/why not?

Answer 1

We see objects around us because light first hit the object and then reaches our eyes. Then our brain process the image. Light is a combination of electromagnetic waves mean light do not require medium to travel. Light can travel through vacuum as well. This is the reason you are able the see the stars at night. So yes we would be able to see things without atmosphere.

Here are the few strange things which would happen without atmosphere.

Now if we remove the atmosphere then you will not be able to see the blue sky at daytime (assuming you are alive with no atmosphere). At daytime the sky would be as dark as at night time. The sun would not appear to be “yellowish” but rather white like other stars at night.