Perth scientists to play key role monitoring asteroids close to Earth

Zadko telescope

The University of Western Australia has been awarded a contract by the European Space Agency to monitor potentially dangerous asteroids that come close to Earth.

The team includes scientists from UWA’s Department of Physics and the University of Poznan in Poland who will use the powerful Zadko Telescope at the Gravity Precinct in Gingin, to survey the skies from a Perth vantage point.

The project includes the development of software that will allow scientists to share sightings of potential asteroid threats with urgency to observatories across the globe.

UWA Associate Professor David Coward said the Zadko telescope had the capability to monitor asteroids as far away from Earth as Mars and dangerous space rocks that may previously have been undetected near Earth.

“There are thousands of rocks that orbit the Sun close to Earth and monitoring their activity is hugely important for the protection of our planet,” Professor Coward said.

“It’s the smaller space rocks between 10 and 100 metres in diameter where current surveillance is missing.

“These rocks are often termed ‘city destroyers’ and you need to have high precision telescopes, like the Zadko telescope, to monitor these threats.

“The Zadko telescope’s location is pivotal and provides a fantastic resource to monitor what could be a significant threat to our planet’s survival.”

In 2019, a 100-metre-wide asteroid was detected just hours before it came within 70,000 kilometres of Earth, and in 2013 a fireball entered Earth’s atmosphere over Russia at 600,000 kilometres per second, resulting in sonic blasts that shattered countless windows and injured more than 1000 people.

UWA OzGrav Dr Bruce Gendre said space objects had caused great devastation to the Earth in the past, including the asteroid impact that caused the extinction of dinosaurs.

“This is why the European Space Agency’s affiliates approached UWA,” he said. “The Zadko Telescope responds instantly and automatically to European Space Agency alerts to track objects in space near Earth.”

Zadko Observatory Manager John Moore said the contract was perfectly timed. “It comes after the telescope has just had significant upgrades including a new mirror coating which has improved its sensitivity ten times to what it was previously,” he said.

The Zadko Telescope is supported by the UWA Faculty of Engineering and Mathematical Sciences and the Australian Research Council Centre of Excellence for gravitational wave discovery (OzGrav).

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