S1 E1 — Mercury
The formation of NASA and launching of the Mercury Space Program.

S1 E2 — Gemini and Apollo
Reliving July 20, 1969, the day Neil Armstrong became the first man to walk on the moon.

S3 E1 — Cyclone Winston
A record-breaking cyclone wrecks South Pacific islands; a cruise ship becomes stranded in a storm; two friends get caught in a deadly avalanche.

S3 E2 — Nature's Fury
Hurricane Florence causes biblical-level flooding in North Carolina; a magnitude seven earthquake rocks Anchorage, Alaska; a colossal wave swamps a surfer in Nazaré, Portugal.

S3 E3 — Wildfire Devastation
Wildfires devastate the seaside village of Mati in Greece; monster hail pummels tourists and zoo animals in Colorado; hikers in Turkey fight for survival after they're stranded by a flash flood; a tornado rips off roofs and catapults cars in Canada.

S3 E4 — Nowhere to Hide
Hurricane Michael rips across the Florida panhandle, trapping a storm chaser; the UK coast guard battles gale force winds to save fishermen stranded on the hull of their capsized trawler; an adventurer suffers extreme heat stroke in the Gobi Desert.

S3 E5 — Run for Cover
As the deadliest wildfire in Californian history tears across the state, one man battles the flames in a bid to save his home; a tornado tears apart a woman's home in Arkansas; in Uruguay, a helicopter rescue team tries to reach a trapped canoeist.

S3 E6 — Trapped by Tornadoes
A twister traps teachers and pupils at an American school; wildfires rip across the moors in the north of England; in Argentina, a trek nearly ends in tragedy for a group of hikers; in Africa, a man is on a mission to descend into a volcano.

S2 E5 — Night Fire
The Northern Lights tells the story of the makeup of the planet, the sun and possibly life on other planets.

S2 E2 — Virtual Universe
Using computer simulations, it is possible to fly over other worlds and see how galaxies interact.

S2 E6 — Stargazer's Paradise
Advanced telescopes capture images of the night sky from the Atacama Desert.

S2 E3 — Hubble's Renaissance
A dramatic repair mission gives the Hubble Space Telescope another chance to capture stunning pictures like only it can.

S2 E1 — Superscopes
In the future, telescopes will allow scientists to see further to planets that may support life.

S2 E4 — Cosmic Rainbow
In an attempt to view the cosmos beyond the scope of human vision, infrared light and gamma radiation are used.

S3 E1 — Seasons of Saturn
The second-largest planet is also a mini-solar system with 60 moons and those crazy rings.

S3 E2 — Vesta Unveiled
The Dawn mission explores the asteroid Vesta and dwarf planet Ceres.

S3 E3 — Water Worlds
The search for water is actually the search for life, and that search is taking man to some unusual places, including a moon of Saturn.

S3 E4 — Gravity
Scientists are now probing to detect gravity waves in space and mapping the gravity patterns of the moon for the first time.

S3 E5 — Science and the Shuttle
For more than 25 years, the shuttle was our ticket to space and our laboratory in orbit.

S3 E6 — Landing on Mars
The vast majority of information being gathered about Mars is by orbiters chronicling everything they can.

S3 E1 — Cyclone Winston
A record-breaking cyclone wrecks South Pacific islands; a cruise ship becomes stranded in a storm; two friends get caught in a deadly avalanche.

S3 E2 — Nature's Fury
Hurricane Florence causes biblical-level flooding in North Carolina; a magnitude seven earthquake rocks Anchorage, Alaska; a colossal wave swamps a surfer in Nazaré, Portugal.

S3 E3 — Wildfire Devastation
Wildfires devastate the seaside village of Mati in Greece; monster hail pummels tourists and zoo animals in Colorado; hikers in Turkey fight for survival after they're stranded by a flash flood; a tornado rips off roofs and catapults cars in Canada.

S3 E4 — Nowhere to Hide
Hurricane Michael rips across the Florida panhandle, trapping a storm chaser; the UK coast guard battles gale force winds to save fishermen stranded on the hull of their capsized trawler; an adventurer suffers extreme heat stroke in the Gobi Desert.

S3 E5 — Run for Cover
As the deadliest wildfire in Californian history tears across the state, one man battles the flames in a bid to save his home; a tornado tears apart a woman's home in Arkansas; in Uruguay, a helicopter rescue team tries to reach a trapped canoeist.

S3 E6 — Trapped by Tornadoes
A twister traps teachers and pupils at an American school; wildfires rip across the moors in the north of England; in Argentina, a trek nearly ends in tragedy for a group of hikers; in Africa, a man is on a mission to descend into a volcano.

S2 E5 — Night Fire
The Northern Lights tells the story of the makeup of the planet, the sun and possibly life on other planets.

S2 E2 — Virtual Universe
Using computer simulations, it is possible to fly over other worlds and see how galaxies interact.

S2 E6 — Stargazer's Paradise
Advanced telescopes capture images of the night sky from the Atacama Desert.

S2 E3 — Hubble's Renaissance
A dramatic repair mission gives the Hubble Space Telescope another chance to capture stunning pictures like only it can.

S2 E1 — Superscopes
In the future, telescopes will allow scientists to see further to planets that may support life.

S2 E4 — Cosmic Rainbow
In an attempt to view the cosmos beyond the scope of human vision, infrared light and gamma radiation are used.

S3 E1 — Seasons of Saturn
The second-largest planet is also a mini-solar system with 60 moons and those crazy rings.

S3 E2 — Vesta Unveiled
The Dawn mission explores the asteroid Vesta and dwarf planet Ceres.

S3 E3 — Water Worlds
The search for water is actually the search for life, and that search is taking man to some unusual places, including a moon of Saturn.

S3 E4 — Gravity
Scientists are now probing to detect gravity waves in space and mapping the gravity patterns of the moon for the first time.