The idea that there’s a moral imperative for humans to expand beyond Earth is echoed by influential proponents of space exploration.
Technology had enabled humans to explore the deep sea, the Earth's poles, and outer space. But we shouldn't forget historical lessons about frontiers in the process of traversing them.
The health of astronauts will be one of the main challenges for Musk.
Musk's know-how cannot be dismissed but there are significant challenges standing between him and his dream of colonising Mars.
Comet 67P taken with a wide-angle lens from an altitude of about 15.5km above the surface during the spacecraft’s final descent on September 30.
ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA
A moment of sadness with tears shed ... then it was on with the work.
Artist’s impression of Rosetta’s descent.
It has been an epic journey, much more than 12 years in the making, but Rosetta is just about to go out in a blaze of glory. The final commands were uploaded to the spacecraft mid-morning on September…
Workers wave flags as the rocket carrying the Shenzhou-9 spacecraft being moved to the launch pad.
We don't know where Tiangong-1 will land but the risk of someone being hit is about 1 in 3,200.
Artist’s conception of the OSIRIS-REx spacecraft at Bennu asteroid.
Scientists are hoping to collect 100g of material from asteroid Bennu.
Artist’s depiction of a pair of O'Neill cylinders.
Rick Guidice NASA Ames Research Center
Future factories in space could be used to launch large structural sections to build space stations.
Artist’s impression of a cryobot and submarine in the ice on Jupiter’s Europa.
We could be exploring the oceans of Jupiter's and Saturn's icy moons in a couple of decades. Here's what we need to work out.
Right, time for a little zero gravity and chill…
What viewing on the International Space Station tells us about life among the stars.
DSAC is prepping for a yearlong experiment to characterize and test its suitability for use in future deep space exploration.
Jet Propulsion Laboratory
Measuring time is a crucial part of navigation – particularly in space, where exacting precision is called for. The DSAC is poised to make a change that will aid future deep space missions.
CubeSats upon release from the International Space Station.
Just about anyone can get a tiny, cheap satellite into orbit these days. As we consider how to deploy them responsibly, inspiration comes from an amateur community of enthusiasts.
Robotic construction of Lunar and Martian infrastructure using 3D printing.
Why carry building materials from Earth into space, when we can build structures by 3D printing using materials found out there?
NASA’s Orion spacecraft will be able to take humans further away from Earth than ever before.
From inflatable space stations to trips to asteroids and maybe even Mars, the next decade of human spaceflight will include many exciting firsts.
The plan to use lasers to send mini-spaceships to the stars.
It's an ambitious plan to send a micro-spaceship to our stellar neighbour but is this possible with today's technology or even technology in the near future?
SpaceX’s Falcon 9 rocket blasts off.
Yes, it really is rocket science.
Alpha Centauri is actually the outer star (bottom right) of The Pointers, which point to the Southern Cross.
Y. Beletsky (LCO)/ESO
A US$100-million plan has been announced to send tiny probes out in space in search of life elsewhere in the universe. But are they looking in the right place?
Out of this world.
We already have much of the technology we’d need to start a colony on another planet.
Juno in front of Jupiter.
Missions including ExoMars, Juno and Rosetta could make some major discoveries in 2016.
Time to salute the monkeys, dogs and ducks that went before us.
Ceres, as seen by NASA’s Dawn spacecraft on December 10, around a crater chain called Gerber Catena.
Dawn's mission director and chief engineer describes his 'dream come true' job – and how the new data coming back from Ceres could unlock some of the secrets of the earliest days of our solar system.