Scientists and modern explorers are determined to send humans to Mars; as NASA builds its first spacecraft to carry astronauts to Mars and tech visionaries devise extraterrestrial colonies, future on Mars might be a reality.
When a strange alien object is discovered speeding through our solar system, experts race to uncover if it's real evidence of extraterrestrial contact or a deadly asteroid on a collision course with planet earth.
Journey to the heart of the M87 supermassive black hole, the first and only black hole ever photographed, and explore the mystery of how it grew so large, what lies inside, and how it controls the entire galaxy.
How and when will the Universe end? Gravity and dark matter are poised to annihilate the Universe in a big crunch. Expansion and dark energy may tear it apart. Or, a phase transition could kill us tomorrow in a cosmic death bubble.
All life on Earth started as single-cell bacteria and stayed like that for two billion years. So even if we do find alien life out there, what are the chances of that life being complex like us? Astronaut host – Mae Jemison.