Locals feared the orbs were explosive (Picture: X/Australian Space Agency)

We finally know why weird silver balls have been appearing on beaches in Queensland, Australia, experts have told Metro.

Six metal spheres washed up on Friday, Saturday and Sunday near Forrest Beach, a seaside community 10 miles southeast of Ingham.

Firefighters in hazmat suits, space experts and national emergency officials have been scratching their heads as to what these objects are.

Five of the chrome balls were placed in drums, with the police enforcing a 160ft exclusion zone over fears they’re ‘toxic’.

Local Trevor Kyle told the Australian Broadcasting Corporation that the first orb was found by a crab fisherman, who was told to ditch his pot by cops.

Kyle initially shrugged it off as a buoy but began to worry when he saw officers flood the beach.

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Six of the balls washed up in the space of three days (Picture: X/Australian Space Agency)

‘You could see that it was getting bigger and bigger and there were questions of the bomb squad being involved, SES maybe, firies (fire services), ambo (ambulance),’ he added.

But the Australian Space Agency revealed on Monday what these spheres most likely are – ‘space balls’.

‘Space balls’ (no, not the 1980s movie) is a rather goofy word for pressurised balls of fuel used in rockets.

The agency said on X: ‘The objects’ location and characteristics are consistent with debris from a foreign rocket body that recently re-entered the atmosphere from orbit.’

The recovered objects appear to be pressure vessels from a space launch vehicle. The Agency has identified the likely source. The objects’ location and characteristics are consistent with debris from a foreign rocket body that recently re-entered the atmosphere from orbit.

— Australian Space Agency (@AusSpaceAgency) July 6, 2026

They’re a common form of space junk, with roughly 15,800 tonnes of old satellites and rocket scraps now crowding the cosmos above our heads.

But Aussie space officials have stressed that the orbs are safe.

‘The Agency is continuing to engage with international authorities to formally confirm the launch vehicle and launching state,’ it added.

Should we be worried about space junk?

Metro asked three space experts about what they think the space balls could be.

‘The spherical balls are clearly the hydrazine tanks from a launch vehicle that has re-entered the atmosphere,’ said Don Pollacco, a professor in astrophysics at the University of Warwick.

‘Hydrazine is a particularly nasty chemical with properties that make it ideal for rocket fuel – pure hydrazine has been used as a liquid propellant since the 1950s.’

The reason the fuel balls are, well, ball-shaped, is that hydrazine is used by a rocket’s small thrusters to nudge its altitude when in space.

‘The Queensland tanks clearly landed at sea and then were washed up on the beach,’ Pollacco added.

‘At this stage, it’s not clear which rocket body re-entered and released these but it’s expected they are of Indian or Chinese origin.’

Dr Penny Wozniakiewicz, senior lecturer in space science at the University of Kent, similarly suggested the spheres are leftover rocket parts.

‘On the Earth, we are protected by the atmosphere, which usually does a great job of burning up debris that is coming out of orbit and heading for the surface,’ she said.

‘Indeed, at the end of their lifetime, we purposefully dispose of spacecraft by changing their orbit around the Earth so that they quite quickly enter the atmosphere and burn up.’

Critics questioned whether the globes were space junk, given the lack of scorch marks – the temperature during reentry can exceed 1,500°C.

But Accu Components, a precision engineering components supplier which tracks and analyses space junk, says there could be a reason for this.

‘For most debris, it isn’t hazardous,’ Dean Sladen, a quality manager and aerospace engineer at the company, said.


The orbs were initially thought to be hazardous (Picture: X/Australian Space Agency)

‘Most objects burn up completely on re-entry, and what does survive, like the pressure vessels found in Queensland, is usually just titanium or a composite shell rather than anything toxic.’

Given the sheer size of Australia, washed-up space junk is common and will get more so as rocket and artificial satellite launches increase.

A trunk from one of Elon Musk’s rockets, the SpaceX Dragon, crashed onto a beach in New South Wales in 2022.

Then, a pressure vessel from an Indian launch vehicle washed up in Western Australia in 2023 – India did not request the debris back.

With all these metal scraps flying above your head, should you be worried at all?

‘Most of the Earth’s surface remains unoccupied, so you have to be unlucky to be struck by a piece of debris,’ said Pollacco.

‘If you were directly hit, you would not likely walk away.;

The Australian Space Agency recommends that if you find some space junk crashed into your garden or on a beach, to:

Do not handle the debris. Space objects are built from a range of materials that may be hazardous.

Contact the local authorities. 

Notify space officials.

Get in touch with our news team by emailing us at webnews@metro.co.uk.

For more stories like this, check our news page.

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