How the Universe Works

Planets. From giant burning gas spheres to icy orphaned worlds wandering in interstellar space, explore the strange planets that inhabit the vast spread of the universe. S1, Ep6

Planets. From giant burning gas spheres to icy orphaned worlds wandering in interstellar space, explore the strange planets that inhabit the vast spread of the universe. S1, Ep6

The Universe's Deadliest. The Universe is a violent and dangerous place. From exploding stars and colliding galaxies to nebula shockwaves - what are the worst places in the Universe? S5, Ep2

The Universe's Deadliest. The Universe is a violent and dangerous place. From exploding stars and colliding galaxies to nebula shockwaves - what are the worst places in the Universe? S5, Ep2

Journey To A Black Hole. The supermassive black hole M87 is the first and only black hole ever photographed. How did it grow so large and what effect does it have on the galaxy? S9, Ep11

Journey To A Black Hole. The supermassive black hole M87 is the first and only black hole ever photographed. How did it grow so large and what effect does it have on the galaxy? S9, Ep11

Secrets Of The Cosmic Web. New research is beginning to reveal an invisible scaffold of dark matter known as the Cosmic Web, an intergalactic network that transformed the universe. S10, Ep1

Secrets Of The Cosmic Web. New research is beginning to reveal an invisible scaffold of dark matter known as the Cosmic Web, an intergalactic network that transformed the universe. S10, Ep1

Moons. Are moons the most likely place to find life beyond the Earth? Explore the 300 that lie within our solar system and find out about Earth's turbulent past. S1, Ep7

Moons. Are moons the most likely place to find life beyond the Earth? Explore the 300 that lie within our solar system and find out about Earth's turbulent past. S1, Ep7

Black Holes: The Secret Origin. Supermassive black holes are so large they devour stars and shape galaxies. The latest science may answer why they grow so large. S5, Ep3

Life & Death On The Red Planet. Once there was life on Mars - but scientists believe a series of devastating mass extinctions transformed a watery planet into a desert. S5, Ep4

Stars That Kill. Countdown of NASAs top six the deadliest stars - 'vampire' stars that drain their neighbours, supernovas and white dwarfs that destroy planets. S5, Ep5

Stars That Kill. Countdown of NASAs top six the deadliest stars - 'vampire' stars that drain their neighbours, supernovas and white dwarfs that destroy planets. S5, Ep5

Finding The New Earth. New discoveries have revealed thousands of exoplanets beyond our solar system. Some resemble earth to the extent that one could be a new home for humanity. S7, Ep10

Finding The New Earth. New discoveries have revealed thousands of exoplanets beyond our solar system. Some resemble earth to the extent that one could be a new home for humanity. S7, Ep10

Moons. Are moons the most likely place to find life beyond the Earth? Explore the 300 that lie within our solar system and find out about Earth's turbulent past. S1, Ep7

Black Holes: The Secret Origin. Supermassive black holes are so large they devour stars and shape galaxies. The latest science may answer why they grow so large. S5, Ep3

Life & Death On The Red Planet. Once there was life on Mars - but scientists believe a series of devastating mass extinctions transformed a watery planet into a desert. S5, Ep4

Stars That Kill. Countdown of NASAs top six the deadliest stars - 'vampire' stars that drain their neighbours, supernovas and white dwarfs that destroy planets. S5, Ep5

Stars That Kill. Countdown of NASAs top six the deadliest stars - 'vampire' stars that drain their neighbours, supernovas and white dwarfs that destroy planets. S5, Ep5

Curse Of The Cosmic Rays. Cosmic rays that damage human DNA are a serious risk in manned space exploration. Can physicists find the source of the rays and help reduce the danger? S10, Ep2

Dark History Of Earth. Earth's past is marked by one cosmic disaster after another, forging the path of human evolution. Experts explore how close the Earth has come to destruction. S10, Ep3

Voyager's Ultimate Mission. Experts explore the most astonishing discoveries of the Voyager spacecraft. They examine how the operation has transformed into the ultimate mission. S10, Ep4

Voyager's Ultimate Mission. Experts explore the most astonishing discoveries of the Voyager spacecraft. They examine how the operation has transformed into the ultimate mission. S10, Ep4

Mystery Of Planet 9. Scientists have discovered evidence of a mysterious ninth planet on the very edge of our solar system, could its moons support extra-terrestrial life? S5, Ep1

Mystery Of Planet 9. Scientists have discovered evidence of a mysterious ninth planet on the very edge of our solar system, could its moons support extra-terrestrial life? S5, Ep1

Secret History Of Pluto. Despite Pluto's appearance as a dark and frozen world, scientists are investigating whether there might be warm liquid water beneath the surface. S5, Ep6

The Dark Matter Enigma. Dark matter is one of the greatest mysteries of the universe facing scientists today. Could it be the cause of supermassive black holes and mass extinctions? S5, Ep7

Strangest Alien Worlds. Astronomers have discovered bizarre planets very different to Earth out in the galaxy, but will we ever locate a planet similar to our own? S5, Ep8

Strangest Alien Worlds. Astronomers have discovered bizarre planets very different to Earth out in the galaxy, but will we ever locate a planet similar to our own? S5, Ep8

When NASA Met Jupiter. NASA's Juno probe is unlocking Jupiter's secrets, answering mysteries and gathering data. Scientists and experts explain the importance of this mission. S8, Ep1

When NASA Met Jupiter. NASA's Juno probe is unlocking Jupiter's secrets, answering mysteries and gathering data. Scientists and experts explain the importance of this mission. S8, Ep1

Mystery Of Planet 9. Scientists have discovered evidence of a mysterious ninth planet on the very edge of our solar system, could its moons support extra-terrestrial life? S5, Ep1

Secret History Of Pluto. Despite Pluto's appearance as a dark and frozen world, scientists are investigating whether there might be warm liquid water beneath the surface. S5, Ep6

The Dark Matter Enigma. Dark matter is one of the greatest mysteries of the universe facing scientists today. Could it be the cause of supermassive black holes and mass extinctions? S5, Ep7

Strangest Alien Worlds. Astronomers have discovered bizarre planets very different to Earth out in the galaxy, but will we ever locate a planet similar to our own? S5, Ep8

Strangest Alien Worlds. Astronomers have discovered bizarre planets very different to Earth out in the galaxy, but will we ever locate a planet similar to our own? S5, Ep8

Hunt For Dark Matter. The mysterious dark matter is thought to be the cosmic glue that holds the universe together, yet the search for it continues to puzzle scientists. S10, Ep6

Hunt For The Universe's Origin. Conflicting results make determining the age of the universe difficult. Finding the answer could be the key to many mysteries of the cosmos. S10, Ep7

Hunt For The Universe's Origin. Conflicting results make determining the age of the universe difficult. Finding the answer could be the key to many mysteries of the cosmos. S10, Ep7

The Universe's Deadliest. The Universe is a violent and dangerous place. From exploding stars and colliding galaxies to nebula shockwaves - what are the worst places in the Universe? S5, Ep2

The Universe's Deadliest. The Universe is a violent and dangerous place. From exploding stars and colliding galaxies to nebula shockwaves - what are the worst places in the Universe? S5, Ep2

Mystery Of Planet 9. Scientists have discovered evidence of a mysterious ninth planet on the very edge of our solar system, could its moons support extra-terrestrial life? S5, Ep1

The Universe's Deadliest. The Universe is a violent and dangerous place. From exploding stars and colliding galaxies to nebula shockwaves - what are the worst places in the Universe? S5, Ep2

Black Holes: The Secret Origin. Supermassive black holes are so large they devour stars and shape galaxies. The latest science may answer why they grow so large. S5, Ep3

Black Holes: The Secret Origin. Supermassive black holes are so large they devour stars and shape galaxies. The latest science may answer why they grow so large. S5, Ep3

NASA's Journey To Mars. Manned missions to Mars are the next frontier of human exploration and NASA wants to put boots on the Red Planet by 2035. But, is it mission impossible? S8, Ep2

NASA's Journey To Mars. Manned missions to Mars are the next frontier of human exploration and NASA wants to put boots on the Red Planet by 2035. But, is it mission impossible? S8, Ep2

The Universe's Deadliest. The Universe is a violent and dangerous place. From exploding stars and colliding galaxies to nebula shockwaves - what are the worst places in the Universe? S5, Ep2

Mystery Of Planet 9. Scientists have discovered evidence of a mysterious ninth planet on the very edge of our solar system, could its moons support extra-terrestrial life? S5, Ep1

The Universe's Deadliest. The Universe is a violent and dangerous place. From exploding stars and colliding galaxies to nebula shockwaves - what are the worst places in the Universe? S5, Ep2

Black Holes: The Secret Origin. Supermassive black holes are so large they devour stars and shape galaxies. The latest science may answer why they grow so large. S5, Ep3

Black Holes: The Secret Origin. Supermassive black holes are so large they devour stars and shape galaxies. The latest science may answer why they grow so large. S5, Ep3

Black Holes: The Secret Origin. Supermassive black holes are so large they devour stars and shape galaxies. The latest science may answer why they grow so large. S5, Ep3

Life & Death On The Red Planet. Once there was life on Mars - but scientists believe a series of devastating mass extinctions transformed a watery planet into a desert. S5, Ep4

Life & Death On The Red Planet. Once there was life on Mars - but scientists believe a series of devastating mass extinctions transformed a watery planet into a desert. S5, Ep4

Birth Of The Monster Black Holes. Experts explain the importance of supermassive black holes. They have some answers, but can they solve the mysteries surrounding these phenomena? S9, Ep3

Secrets Of The Sun. Some of the brightest minds and theorists on the planet explore the limits of human knowledge and explain the science behind our star. S9, Ep4

Mystery Of Alien Worlds. New discoveries have revealed alien worlds that seem to defy the laws of physics. Experts use cutting-edge astronomy to explore this mystery. S9, Ep6

Mystery Of Alien Worlds. New discoveries have revealed alien worlds that seem to defy the laws of physics. Experts use cutting-edge astronomy to explore this mystery. S9, Ep6

Finding The New Earth. New discoveries have revealed thousands of exoplanets beyond our solar system. Some resemble earth to the extent that one could be a new home for humanity. S7, Ep10

Finding The New Earth. New discoveries have revealed thousands of exoplanets beyond our solar system. Some resemble earth to the extent that one could be a new home for humanity. S7, Ep10

Battle Of The Dark Universe. Dark matter and energy battle for the cosmos and the winner will determine the universe's fate. New discoveries may reveal which force will win. S7, Ep7

Cassini's Final Secrets. For 20 years NASA's Cassini spacecraft revealed Saturn's strange secrets until it vaporized in its atmosphere. Now, fresh data points to new discoveries. S7, Ep8

Cassini's Final Secrets. For 20 years NASA's Cassini spacecraft revealed Saturn's strange secrets until it vaporized in its atmosphere. Now, fresh data points to new discoveries. S7, Ep8