The shift toward mega-constellations is a challenge for global space governance.
SpaceX's satellites will populate the night sky, affecting how we observe the stars. And this is just the beginning of private satellite mega-constellations.
Radio telescopes are incredibly sensitive to phone network interference.
Two defunct satellites passed within metres of one another, prompting renewed focus on the dangers of space debris. But with many satellites treated as military secrets, how do we track the hazards?
Satellites monitor climate change, guide people with GPS and keep us connected through texts and social media, but they're under threat.
In the future we might get sick of hearing people tell their stories about going to the Moon. Perhaps the Moon will just be like thinking about today's Antarctica – a remote but accessible place.
There needs to be an international approach regarding the management and disposal of space junk.
On 27 March, India announced it had successfully conducted an anti-satellite missile test, Mission Shakti. India is now the fourth country in the world displaying this capability.
This year the Apollo 11 mission turns 50 - but what does the future hold for the Moon? The ephemeral shadows cast by human artefacts may soon be joined by more permanent scars of lunar mining.
In the space beyond Earth's atmosphere, countries are focusing on nationalist pursuits and ignoring the consequences for the rest of humanity. How can we keep the peace and build a sustainable future?
China just became the first country to land a probe on the far side of the moon. It's a technological achievement and another sign of China's capabilities and ambitions in space.
At the end of the day, the problem is that no-one on Earth wants nuclear waste stored near them, and it's not safe or cost-effective to blast it into space.
Countries developing technology that removes or blasts away space junk may appear to be doing a public service. But those same technologies can destroy military and communications satellites.
The Outer Space Treaty has guided global exploration and use of outer space since 1967. Trump's 'Space Force' may not be a good fit.
China's space station Tiangong-1 is about to crash back to Earth any day now. It's out of control too so no one really knows where it will land. So what if it hits you or your house?
Air resistance makes it near impossible to predict the path of a crashing satellite.
China's Tiangong-1 space station is hurtling around Earth out of control and about to come crashing down. It's just one of thousands of pieces of space junk left orbiting our planet.
When Vanguard 1 – the "grapefruit satellite" – was launched in 1958, its only companions were Explorer 1 and Sputnik 2. Soon it may have thousands of descendants swarming around it.
The launch of Elon Musk's Falcon Heavy rocket is undoubtedly a spectacular feat of engineering - but the release of a sports car into orbit also says something about our values as human beings.
By taking on the role as leader in space traffic management, Australia can gain international power and exploit commercial opportunities.