02: Aliens: Are We Alone? | Brian Cox’s Adventures in Space and Time

Duration: 59'14''

Synopsis

Brian Cox looks at our attempts to answer one of the most profound questions we can ask - are we alone in the universe? In this film, he explains why this search should be taken seriously.

Further Information

More clips from Brian Cox's Adventures in Space and Time

01: Space: How Far Can We Go? | Brian Cox's Adventures in Space and Time

01: Space: How Far Can We Go? | Brian Cox's Adventures in Space and Time

BBC Two | 2021 | 59'06''

Brian Cox explores the latest science and takes a new look at his old films and asks: how far can we...

03: What Is Gravity? | Brian Cox's Adventures in Space and Time

03: What Is Gravity? | Brian Cox's Adventures in Space and Time

BBC Two | 2021 | 58'57''

Brian takes a fresh look at the concept of gravity, revealing it to be far more than just the force that make...

04: What Is Time? | Brian Cox's Adventures in Space and Time

04: What Is Time? | Brian Cox's Adventures in Space and Time

BBC Two | 2021 | 58'17''

Brian explores the enigma of time - a phenomenon that we take for granted but which, as far as physicists are co...

01: Space: How Far Can We Go? | Brian Cox's Adventures in Space and Time

01: Space: How Far Can We Go? | Brian Cox's Adventures in Space and Time

BBC Two | 2021 | 59'06''

Brian Cox explores the latest science and takes a new look at his old films and asks: how far can we...

03: What Is Gravity? | Brian Cox's Adventures in Space and Time

03: What Is Gravity? | Brian Cox's Adventures in Space and Time

BBC Two | 2021 | 58'57''

Brian takes a fresh look at the concept of gravity, revealing it to be far more than just the force that make...

04: What Is Time? | Brian Cox's Adventures in Space and Time

04: What Is Time? | Brian Cox's Adventures in Space and Time

BBC Two | 2021 | 58'17''

Brian explores the enigma of time - a phenomenon that we take for granted but which, as far as physicists are co...

More resources about Space Physics

Episode 1 | Orbit: Earth's Extraordinary Journey

Episode 1 | Orbit: Earth's Extraordinary Journey

BBC Two | 2012 | 58'23''

Kate Humble and Dr Helen Czerski follow the Earth's voyage around the sun for one complete orbit, travelling first from July...

How hurricanes are formed by Earth's rotation | Learning Zone

How hurricanes are formed by Earth's rotation | Learning Zone

BBC Two | 2012 | 5'20''

Physicist Helen Czerski explains that hurricanes happen because the earth is rotating. She shows how, because t...

01: Deep Earth | How Earth Made Us

01: Deep Earth | How Earth Made Us

BBC Two | 2010 | 59'24''

Series telling the story of how the development of civilisation was influenced by planetary forces. Professor Iain Stewart explores the ro...

Episode 1 | Astronauts: Do You Have What It Takes?

Episode 1 | Astronauts: Do You Have What It Takes?

BBC Two | 2017 | 58'44''

Chris Hadfield, Dr Kevin Fong and Dr Iya Whiteley put 12 candidates through a series of physical and psychological tests t...

Orbit: Earth's Extraordinary Journey | Learning Zone

Orbit: Earth's Extraordinary Journey | Learning Zone

BBC Two | 2012 | 58'58''

Kate Humble and Dr Helen Czerski follow the Earth's voyage around the sun for one complete orbit, to witness the astonis...

Episode 4 | Astronauts: Do You Have What It Takes?

Episode 4 | Astronauts: Do You Have What It Takes?

BBC Two | 2017 | 58'18''

The competition becomes more intense as the remaining candidates are deprived of oxygen to see if they can recognise the s...

02: Out of Sight | Richard Hammond's Invisible Worlds

02: Out of Sight | Richard Hammond's Invisible Worlds

BBC HD | 2010 | 58'22''

Richard Hammond uses groundbreaking imaging technology to take the viewer on a journey of discovery beyond the visible ...

Episode 5 | Astronauts: Do You Have What It Takes?

Episode 5 | Astronauts: Do You Have What It Takes?

BBC Two | 2017 | 58'32''

The astronaut candidates fight for their place in the final. Their leadership skills are assessed in a survival test and t...

01: Destiny | Wonders of the Universe

01: Destiny | Wonders of the Universe

BBC Two | 2011 | 59'04''

Professor Brian Cox explores the laws of the universe. In this episode, Brian looks at the nature of time and its role in creating both...

Episode 2 | Orbit: Earth's Extraordinary Journey

Episode 2 | Orbit: Earth's Extraordinary Journey

BBC Two | 2012 | 58'58''

Kate Humble and Dr Helen Czerski follow the Earth's voyage around the sun for one complete orbit, this time travelling from ...

01: Empire of the Sun | Wonders of the Solar System

01: Empire of the Sun | Wonders of the Solar System

BBC Two | 2019 | 58'29''

Professor Brian Cox describes how the laws of nature have carved natural wonders across the solar system. He explores the...

05: The Big Bang: Before the Dawn | Universe

05: The Big Bang: Before the Dawn | Universe

BBC Two | 2021 | 59'01''

It's the ultimate question: why are we here? Brian Cox explores how cutting-edge space missions take us back 13.8 billion years ...

A Night with the Stars

A Night with the Stars

BBC Two | 2011 | 58'39''

Professor Brian Cox takes an audience of famous faces, scientists and members of the public on a journey through some of the most challenging concepts...

Episode 2 | Astronauts: Do You Have What It Takes?

Episode 2 | Astronauts: Do You Have What It Takes?

BBC Two | 2017 | 58'47''

The remaining astronaut candidates are put through more demanding tests. They have to escape from an underwater capsule an...

Episode 3 | Astronauts: Do You Have What It Takes?

Episode 3 | Astronauts: Do You Have What It Takes?

BBC Two | 2017 | 59'00''

Old fears surface when the remaining candidates face some space agency swim tests. Their teamwork and mental agility are s...

Episode 3 | Orbit: Earth's Extraordinary Journey

Episode 3 | Orbit: Earth's Extraordinary Journey

BBC Two | 2012 | 58'01''

Kate Humble is in the Arctic, where spring arrives with a bang. Helen Czerski chases a tornado to show how the earth's angle...

Episode 6 | Astronauts: Do You Have What It Takes?

Episode 6 | Astronauts: Do You Have What It Takes?

BBC Two | 2017 | 58'13''

The finalists head to the Shuttle Landing Facility on Florida's Space Coast for a tough test in weightlessness, and back i...

Evidence of the Big Bang | James May's Things You Need to Know

Evidence of the Big Bang | James May's Things You Need to Know

BBC Two | 2011 | 2'27''

James May explores the clues left in outer space that are proof of the Big Bang's occurrence.

Evidence of the Big Bang | Wonders of the Universe

Evidence of the Big Bang | Wonders of the Universe

BBC Two | 2011 | 4'26''

Brian Cox simply explains how light and colour are crucial evidence for the Big Bang.

01: Volcano Worlds | Solar System

01: Volcano Worlds | Solar System

BBC Two | 2024 | 58'57''

Professor Brian Cox explores planets and moons covered in volcanoes. He encounters alien landscapes bursting with fire and ice - eruptions ...

More from Brian Cox

03: Storm Worlds | Solar System

03: Storm Worlds | Solar System

BBC Two | 2024 | 58'57''

Professor Brian Cox explores the solar system's wildest weather, encountering powerful lightning, strange metallic frosts and monsoon rains o...

Brian Cox: Seven Days on Mars

Brian Cox: Seven Days on Mars

BBC Two | 2022 | 1'28'53''

With unique access to Nasa, Brian Cox follows Perseverance rover's search for life on Mars during a critical seven-day period as it undertakes ...

01: Space: How Far Can We Go? | Brian Cox's Adventures in Space and Time

01: Space: How Far Can We Go? | Brian Cox's Adventures in Space and Time

BBC Two | 2021 | 59'06''

Brian Cox explores the latest science and takes a new look at his old films and asks: how far can we...

02: Alien Worlds: The Search for Second Earth | Universe

02: Alien Worlds: The Search for Second Earth | Universe

BBC Two | 2021 | 58'48''

Professor Brian Cox questions whether we are alone in the universe. There might be more planets than stars in our ga...

02: The Two Sisters - Earth and Mars | The Planets

02: The Two Sisters - Earth and Mars | The Planets

BBC Two | 2019 | 59'16''

Professor Brian Cox continues his tour of the solar system revealing that it was once home to not one, but two blue planets.

01: Empire of the Sun | Wonders of the Solar System

01: Empire of the Sun | Wonders of the Solar System

BBC Two | 2019 | 58'29''

Professor Brian Cox describes how the laws of nature have carved natural wonders across the solar system. He explores the...

Moon Landing Special | Stargazing

Moon Landing Special | Stargazing

BBC Two | 2019 | 1'28'41''

To celebrate the 50th anniversary of the Apollo moon landing, Professor Brian Cox and Dara O Briain travel to where the historic Apollo 11 ...

The 21st Century Race For Space

The 21st Century Race For Space

BBC Two | 2017 | 58'52''

Brian Cox gains exclusive access to Virgin Galactic, Blue Origin and Spaceport America, to explore what is really happening in privately fina...

04: The Pale Blue Dot | Forces of Nature with Brian Cox

04: The Pale Blue Dot | Forces of Nature with Brian Cox

BBC One | 2016 | 58'35''

Professor Brian Cox reveals how Earth's beauty is created by just a handful of forces. In this episode Brian explains...

The Entire Universe

The Entire Universe

BBC Two | 2016 | 59'09''

Eric Idle persuades Professor Brian Cox to present a lecture on the birth of the entire universe. Brian soon realises Eric is actually hosting a comedy a...

04: A Place in Space and Time | Human Universe

04: A Place in Space and Time | Human Universe

BBC Two | 2014 | 58'58''

Professor Brian Cox explores mankind's place in the universe. He looks at how we came to understand that we are not at the cen...

Brian Cox: Space, Time & Videotape

Brian Cox: Space, Time & Videotape

BBC Four | 2014 | 59'13''

Professor Brian Cox is joined by two of his heroes, the actor Brian Blessed and Professor Alice Roberts. On the agenda are his TV idols fr...

Evolution of hearing and jaws in fish, reptiles and mammals | Wonders of Life

Evolution of hearing and jaws in fish, reptiles and mammals | Wonders of Life

BBC Two | 2013 | 4'12''

Spec references J247: B5.2c J250: B5.2c. Clip starts with a description of hearing and then goe...

The genetic modification debate | Science Britannica - Learning Zone

The genetic modification debate | Science Britannica - Learning Zone

BBC Two | 2013 | 6'12''

Brian Cox explores the science behind the genetic modification of plants, and the ongoing debate around ...

03: Clear Blue Skies | In Search of Science

03: Clear Blue Skies | In Search of Science

BBC Two | 2013 | 59'03''

Professor Brian Cox finishes the series by looking at the happy accidents that have led to scientific breakthroughs and consideri...

Evidence of the Big Bang | Wonders of the Universe

Evidence of the Big Bang | Wonders of the Universe

BBC Two | 2011 | 4'26''

Brian Cox simply explains how light and colour are crucial evidence for the Big Bang.

A Night with the Stars

A Night with the Stars

BBC Two | 2011 | 58'39''

Professor Brian Cox takes an audience of famous faces, scientists and members of the public on a journey through some of the most challenging concepts...

Horizon: 40 Years on the Moon

Horizon: 40 Years on the Moon

BBC Four | 2009 | 59'05''

Brian Cox uses the BBC archive to examine the story of man's relationship with the moon, from James Burke testing out Nasa equipment to Neil Ar...

The Big Bang Machine

The Big Bang Machine

BBC Four | 2008 | 58'57''

Brian Cox looks around Cern's LHC in Geneva before it is sealed off and the experiment to try and create conditions that existed a billionth of a second...