Alien Astronauts

From Introduction:

While we all know that wizards of our world plumb the depths of the astral planes, some of us forget that they are not alone. Other worlds have their explorers too, sending them out to gather knowledge of what may be familiar to us, but is strange to them. The alien astronaut is one such explorer, a visitor to this world from a place unknown to us, so far away it is. They bring devices with them to help them survive and gather data. For what purpose though? Their own, of course.