So say humanity builds two interstellar craft and there happens to be a star 5 lightyears away on either side of us, one ahead of us the way the galaxy is rotating and one behind us. Would the craft going against the rotation of the galaxy get there faster?

uninhabitable , isn’t it becoming obvious that the next great battleground will be outer space? Obviously people in our government have already thought of this. Soon won’t many countries be fighting wars to protect territorial claims on other terraformed planets like Mars for example, since that is where (the wealthy/elite at least) of their populations will be forced to live in the future? Is This concept behind our government “space force” proposal?

I mean, why can't they go on space explorations to distant places just like in the movies? All they do is send space probes mostly.

I take that back.....America is 100 percent white, and the statistics of the Canadian population are as follows: 60 percent black, 30 percent Arab, and 10 percent Asian. White Canadians have either been battered to death by the immigrants, or they moved down to the States. And they often enjoy how peaceful and white European America is! Civilized white Canada now forever belongs in the history books. Too bad, it was once a wonderful country. :(

Can we agree that they are "DELUSIONAL"? And those which I consider the most or more delusional (by far) are the liberal socialist progressive intolerant leftists. Basic logic escapes them. So is it FAIR to say that the FLAT earthers and science deniers are, in fact, the LEFTISTS?

I was born in 1997. Just wondering if the world will run out of food and water in my lifetime

Best answer: Pluto didn't pay its dues to join the big planet club.

I heard scientists are figuring out how to make a human not age, but I think we will all eventually die even if there was some type of age reversing thing right?? I can't imagine my body lasting for even 1 million years, and forever is never ending!

Best answer: Yes. The evidence for a history of large liquid water bodies on Mars suggests that it once had a much thicker atmosphere than it does today. The absence of a magnetic field makes Mars more vulnerable to the solar wind than the earth is, and even now, Mars loses atmosphere as the solar wind blows by. Another possibility is that a large collision at some time in the past caused a severe and sudden depletion of the Martian atmosphere. It is true that gravity at the surface of Mars is less than 40% of what it is on earth, and this does allow individual molecules to reach escape velocity more easily than they do in the earth's atmosphere. However, Titan has much less gravity than Mars and yet retains a substantial atmosphere that exerts MORE pressure at Titan's surface than 1 earth atmosphere exerts. Part of the difference is that Titan's atmosphere is quite cold (as Titan is very far from the sun), so not many of its molecules are going fast enough to free themselves.

The loss of the presumed thick ancient atmosphere of Mars is a research question that provokes new papers every year.