The European Space Agency (ESA) has successfully launched Hera, its first planetary defence mission designed to assess whether future asteroids can be deflected from a collision course with Earth.
The probe, which is about the size of a small car, is on its way to a pair of asteroids 195 million kilometres away from Earth, one of which NASA deliberately crashed a spacecraft into two years ago.
It is ESA’s part of a collaboration with NASA to develop future technologies to protect the Earth from a catastrophic asteroid impact.
“The risk of an asteroid hitting our planet affects everyone everywhere, making planetary defence an inherently international endeavour,” said Josef Aschbacher, director general of ESA.
In September 2022, NASA’s DART mission deliberately crashed into the 151m-wide asteroid Dimorphos.
Its goal was to see if smashing a vending machine-sized space probe into an asteroid could nudge it enough to deflect it from a direct hit with Earth.
Dimorphos is a moon of a larger asteroid, Didymos – the binary asteroid chosen as a target.
It was thought the smaller asteroid would remain in its parent’s gravitational pull, eliminating the risk of a future collision with Earth even if the prang with DART proved unpredictable.
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Observations of the DART impact revealed it shifted Dimorphos’s orbit around Didymos by around 32 minutes – 26 times greater than the minimum deflection predicted by NASA scientists.
Image: This image appeared to show DART’s final moments as it impacted with Dimorphos. Pic: ATLAS Project
Hera is designed to provide a detailed post-match analysis of the DART-Dimorphos encounter so it can be developed into a strategy for planetary defence.
As well as studying Dimorphos and Didymos in detail using 11 on-board instruments, it will deploy two micro-satellites that will go into orbit around the asteroid system.
Their missions will end with the two probes landing on Dimorphos’s rubble-like surface, hopefully providing new details about its composition.
“Hera will gather the data we need to turn kinetic impact into a well understood and repeatable technique on which all of us may rely on one day,” said Mr Aschbacher.
Image: A SpaceX Falcon 9 rocket lifts off carrying the Hera spacecraft. Pic: Reuters
While most of us think of civilisation-ending asteroid impacts as the stuff of Hollywood movies, they remain a genuine, albeit low, risk.
Over our 4.5 billion year history, Earth has suffered more than three million impacts from various bits of space rock.
Perhaps the most famous was the impact 66 million years ago of a 180km-wide asteroid in what is now Chicxulub, Mexico.
The resulting planetary-scale extinction event helped consign dinosaurs to the natural history books.
Image: An artist’s illustration of the collision between NASA’s DART spacecraft and the asteroid Dimorphos. Pic: ESA
Things have now quietened down a bit, but just last week an asteroid missed Earth by about one million kilometres – less than three times the distance to the Moon – very close by astronomical standards.
Asteroid 2024 ON was 350m across, not a “planet-killer” but large enough to destroy an entire country and lead to catastrophic global climate impacts.
The concerning thing was that it was spotted less than two months ago – leaving little time to do anything to prevent an impact, if it was heading right for us.
That’s all the more reason for missions like Hera and DART to learn as much as possible about the nature of the asteroid threat, as well as how to defend against it.
Hera will swing by Mars in 2025 to help propel it towards its destination. It’s due to arrive at Didymos and Dimorphos in October 2026.
The Rohingya refugees didn’t escape danger though.
Right now, violence is at its worst levels in the camps since 2017 and Rohingya people face a particularly cruel new threat – they’re being forced back to fight for the same Myanmar military accused of trying to wipe out their people.
Image: A child at the refugee camp in Cox’s Bazar
Militant groups are recruiting Rohingya men in the camps, some at gunpoint, and taking them back to Myanmar to fight for a force that’s losing ground.
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Jaker is just 19.
We’ve changed his name to protect his identity.
He says he was abducted at gunpoint last year by a group of nine men in Cox’s.
They tied his hands with rope he says and took him to the border where he was taken by boat with three other men to fight for the Myanmar military.
“It was heartbreaking,” he told me. “They targeted poor children. The children of wealthy families only avoided it by paying money.”
And he says the impact has been deadly.
“Many of our Rohingya boys, who were taken by force from the camps, were killed in battle.”
Image: Jaker speaks to Sky’s Cordelia Lynch
Image: An aerial view of the refugee camp in Cox’s Bazar
The situation in Cox’s is desperate.
People are disillusioned by poverty, violence and the plight of their own people and the civil war they ran from is getting worse.
In Rakhine, just across the border, there’s been a big shift in dynamics.
The Arakan Army (AA), an ethnic armed group has all but taken control of the state from the ruling military junta.
Both the military and the AA are accused of committing atrocities against Rohingya Muslims.
And whilst some Rohingya claim they’re being forced into the fray – dragged back to Myanmar from Bangladesh, others are willing to go.
US President Donald Trump has told Gazans to hand over Israeli hostages or “you are dead”.
The threat, made over social media, came hours after the White House confirmed that US officials had broken with tradition to hold direct talks with Hamas.
The US has previously avoided direct contact with the group owing to Washington’s longstanding position not to negotiate with terrorists – with Hamas having been designated as a terrorist group in the US since 1997.
In a press conference on Wednesday, White House press secretary Ms Keavitt said there had been “ongoing talks and discussions” between the US officials and Hamas.
Image: File pic: AP
But she would not be drawn on the substance of the talks – taking place in Doha, Qatar – between US officials and Hamas, but said Israel had been consulted.
Ms Leavitt continued: “Dialogue and talking to people around the world to do what’s in the best interest of the American people, is something that the president has proven is what he believes is a good faith, effort to do what’s right for the American people.”
There are “American lives at stake,” she added.
Adam Boehler, Mr Trump’s pick to be special envoy for hostage affairs, participated in the direct talks with Hamas.
A spokesperson for Benjamin Netanyahu’s office said Israel had “expressed to the United States its position regarding direct talks with Hamas”.
Hours later, Mr Trump warned Hamas to hand over Israeli hostages or “it’s over for you” – adding: “This is your last warning”.
Image: Hamas militants on the day of a hostage handover in Gaza in February. Pic: Reuters
On his Truth Social platform, Mr Trump wrote: “Release all of the hostages now, not later, and immediately return all of the dead bodies of the people you murdered or it is over for you.
“Only sick and twisted people keep bodies and you are sick and twisted. I am sending Israel everything it needs to finish the job, not a single Hamas member will be safe if you don’t do as I say.”
Mr Trump met with freed Israeli hostages on Wednesday, something he referenced in his social media post, before adding: “This is your last warning. For the leadership of Hamas, now is the time to leave Gaza, while you still have a chance.
“Also, to the people of Gaza, a beautiful future awaits, but not if you hold hostages. If you do, you are dead. Make a smart decision. Release the hostages now, or there will be hell to pay later.”
Israel estimates about 24 living hostages, including American citizen Edan Alexander, and the bodies of at least 35 others, are still believed to be in Gaza.
Image: Donald Trump with Benjamin Netanyahu in February. Pic: Reuters
The US has a long-held policy of not negotiating with terrorists – which it is breaking with these talks as Hamas has been designated a foreign terrorist organisation by the US government’s National Counterterrorism Center since 1997.
The discussions come as a fragile Israel-Hamas ceasefire continues to hold, but its future is uncertain.
Image: Palestinians amid the rubble in the southern Gaza strip. Pic: Reuters
Mr Trump has signalled he has no intention of pushing the Israeli prime minister away from a return to combat if Hamas does not agree to terms of a new ceasefire proposal – which, Israel says, has been drafted by US Middle East envoy Steve Witkoff.
The new plan would require Hamas to release half its remaining hostages – the group’s main bargaining chip – in exchange for a ceasefire extension and a promise to negotiate a lasting truce.
Donald Trump has admitted his tariffs on major trading partners will cause “a little disturbance” – as China said it was “ready” for “any type of war” with the US.
The US president made his comments in an address to Congress, hours after the levies on imports came into effect.
Producers in Mexico and Canada have been hit with a 25% tax on items they export to the US, while a 20% tariff has been applied to Chinese imports.
Image: Donald Trump and Chinese President Xi Jinping. The US president has admitted his tariffs will cause ‘a little disturbance’ – as China responds. Pic: Reuters/AP
Stock markets, which Mr Trump is said to pay close attention to, slid on the tariffs news.
Exporters in the affected countries as well as businesses in the US and economists have raised concerns about the potential price-raising impact of the tariffs.
Making imports more expensive will likely make goods more expensive and could push prices up across the board.
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6:35
Trump’s Congress speech unwrapped
Concern over threat to interest rates
A cycle of high inflation could lead to interest rates being higher for longer in the US, the world’s largest economy, which could dampen economic activity.
A slowed US economy would have global consequences but even without a hit to the States, there are fears of a global trade war – in which countries add their own trade barriers in the form of tariffs.
The Chinese embassy in the US posted on X: “If war is what the US wants, be it a tariff war, a trade war or any other type of war, we’re ready to fight till the end.”
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Speaking to Sky News presenter Yalda Hakim the US former deputy national security advisor Matt Pottinger said Chinese president Xi Jinping was turning the Chinese economy “into a wartime economy”
“He’s preparing his economy for war so that it can withstand the shocks of war,” he said on The World with Richard Engel and Yalda Hakim podcast
“That means he’s willing to undergo massive inefficiencies in the economy. He’s willing to stockpile food that otherwise would flow easily and more cheaply in from foreign vessels.”
“He’s stockpiling copper and all kinds of inputs into the economy. He is making sure that the private sector is wholly aligned with his broad goals, which are about increasing the Chinese Communist Party’s control over the economy and creating a bigger, better defence industrial base,” Mr Pottinger said.
“He’s preparing for war.”
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Canada’s prime minister Justin Trudeau said his country was launching its own WTO challenge and described the US tariffs as a “dumb thing to do”.
He also warned the move by the Trump administration would impact American workplaces and add to inflation in the US.
Addressing the American public, he said: “We don’t want this… but your government has chosen to do this to you.”
Canada has announced the imposition of 25% tariffs on US imports worth C$30bn (£16.3bn).
But US commerce secretary Howard Lutnick struck a different note on tariffs and on Monday said the president will “probably” announce a compromise with Canada and Mexico as early as Wednesday.