How the Universe Works

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

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.

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?

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?

Strange Lives Of Dwarf Planets. Dwarf planets are some of the solar system's most active places, from oceans of liquid water on Pluto to vanishing volcanoes on icy Ceres.

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?

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?

Strange Lives Of Dwarf Planets. Dwarf planets are some of the solar system's most active places, from oceans of liquid water on Pluto to vanishing volcanoes on icy Ceres.

Death Of The Milky Way. The Milky Way is dying and scientists are trying to discover what's killing it. Scientists must trace its whereabouts over the past 13.6 billion years.

War On Asteroids. Once thought to be an inevitable disaster, scientists now have the technology to prevent asteroids from hitting the Earth. How are they working to do this?

Twin Suns: The Alien Mysteries. Half of the star systems in our galaxy have two stars, possibly creating habitats for alien life. Here, binary stars fling entire worlds into space.

Uranus & Neptune: Rise Of The Ice Giants. New research shows the migration of ice planets may have helped start life on Earth, and stopped it being destroyed. How are they so vital?

The Quasar Enigma. Quasars are the brightest objects in space, powered by black holes, and the most mysterious. How do they shape the universe and ultimately aid in its destruction?

How Black Holes Made Us. Black holes aren't simply violent monsters. New discoveries reveal their importance in creating stars, giving light, and building the universe itself.

Secret World Of Nebulas. Nebulas are the strange structures of cosmic gas and dust where stars are born and die. New discoveries reveal the secrets of these mysterious places.

Twin Suns: The Alien Mysteries. Half of the star systems in our galaxy have two stars, possibly creating habitats for alien life. Here, binary stars fling entire worlds into space.

Uranus & Neptune: Rise Of The Ice Giants. New research shows the migration of ice planets may have helped start life on Earth, and stopped it being destroyed. How are they so vital?

The Quasar Enigma. Quasars are the brightest objects in space, powered by black holes, and the most mysterious. How do they shape the universe and ultimately aid in its destruction?

How Black Holes Made Us. Black holes aren't simply violent monsters. New discoveries reveal their importance in creating stars, giving light, and building the universe itself.

Secret World Of Nebulas. Nebulas are the strange structures of cosmic gas and dust where stars are born and die. New discoveries reveal the secrets of these mysterious places.