SpaceThe Sirens of Mars review: Inside the hunt for life on the Red PlanetWe once thought Mars had canals built by an advanced society. We've come a long way since then, but there is still much to discover, finds Leah CraneCulture
SpaceWhy it's better to fall into a big black hole, and other bizarre facts Black holes exert a powerful pull on our imagination, but their weirdness starts way before you cross the event horizon, says astrophysicist Chris ImpeyFeatures