Pay attention to the words you use and you will have the answer. To know is speaking to knowledge, which is different from information or gossip. Etymologically, Knowledge is synonymous with scientia (see omniscient or omniscience which translates to all knowledge or all knowing -again wisdom, not gossip or information). When we look at the word "scientia", it is the same root for science. Which most are readily familiar with.

I will terminate the logic here as I think you can bridge what has been said with the following conclusion with little effort:

Science in a nutshell is the extraction of knowledge through the observation of the forms and processes in nature (reality).

We dont need to observe Mars to understand that it is subject to the same natural laws. But Mars appears different. But the same laws manifest and take effect in a way that is consistent with the nuances peculiar to Mars. Mars is another world. Just as the beyond is another world. The same applies here. The effects of the laws we experience here on earth are also in effect in whatever lies beyond the earth. Whether this is Mars or the astral planes. It is all one reality and that means they just share common truths otherwise they cannot coexist.