A Thousand Shining Suns _澳门葡京手机版app下载

Semya A. T?nnessen, Marie Havre
2020-10-11T11:21:46.465Z
type:structured-article
www.uio.no

Imagine for a minute that there is nothing at all around you. You are in a void, floating with no destination in mind. Or, are you floating? How can you tell how fast you are moving, if there is nothing around you, if you can't feel the wind in your hair or see objects flying by? When we send things into space, we realize more than ever that velocity is relative. We measure velocity in relation to other objects. On Earth, we can measure velocity against objects that are (seemingly) standing still, but in space we don't have that luxury. We need to find a way to measure velocity against objects that are not standing still.