But sometimes the most fascinating way to explore history is by asking a simple question: what if things had gone differently? Alternate history stories take familiar timelines and twist them, ...

From isolated lunar bases to interstellar odysseys and distant galaxies, these 15 films explore humanity’s courage, survival ...

What Looked Like a Planet Was Actually a Massive Space Collision So, imagine astronomers are looking at something, thinking, ‘Wow, cool planet!’ Then, bam! Turns out it wasn’t a planet at all, but a ...