From damaging the environment to contaminating the solar system, SpaceX's successful launch of the Falcon Heavy rocket also poses risks.
SpaceX's Falcon Heavy could propel two fully loaded city buses more than 50 times the height of Mount Everest at 32 times the cruising speed of a Boeing 747.
Private companies are increasingly challenging national space agencies in a new space race, which comes with great opportunities but also huge risks.
Musk’s audacious plan to blast people to Mars by 2024 glosses over some important social and political challenges that SpaceX will need to successfully navigate to get off the ground.
Sending humans to Mars is a 5-10 year project goal for several global operators right now. It's expensive - but Elon Musk unveiled his new commercial plan today.
Space exploration is exciting - but there are barriers for humans hoping to visit and even stay on planets. Buried ice on Mars could be a water source for interplanetary visits of the future.
In the current commercial space race, the idea of reusing rockets is gaining momentum.
Musk dismisses one of the main technical challenges of being on the Martian surface: the temperature.
We could learn a lot from any mission to send people to Mars, such as whether there's life elsewhere in the universe or even the technology for new household appliances.
The Moon belongs to all of us. Let's share in its beauty from afar without splashing around $100 million on a showy space trip.
We need Mars-level thinking to solve our energy and climate problems here on Earth.
Colliding black holes to exploding spacecraft, 2016 was an incredible year for astrophysics.
The recently broadcast TV mini-series, “Mars”, combines fiction and nonfiction in a way that places them in balance. This kind of combination is likely to feature in more television series and films.
Musk's know-how cannot be dismissed but there are significant challenges standing between him and his dream of colonising Mars.
A true plan for the colonisation of Mars should include both the social and technical feasibility of living there. Unfortunately, Musk left that bit out.
Whatever happens next in new space race will happen quickly. The opportunity is there for Australia to be involved, but it won’t be there for long.
It is unclear how regulated space activities by private companies really are.
Yes, it really is rocket science.
We're on the cusp of being able to consistently launch and land rockets, greatly reducing the cost of space travel. But how long before there's a Millennium Falcon in every garage?
The 50th anniversary of Luna 9's first soft moon landing reminds us how difficult landing a spacecraft is.