When we observe distant celestial objects, there is a possible catch: Is that star I am observing really as reddish as it ...

"The successful SCALPSS operation is a key step in gathering fundamental knowledge about landing and operating on the moon, ...

Blow up pirates. Take sides in a civil war. Or leave human space behind and hope to find some friendly aliens whose culture is more civilized than your own... Endless Sky is a sandbox-style space ...