
The U.S. navy checks its land-based Aegis missile protection system in 2018. Such techniques can monitor and intercept quick and medium-ranged missiles however wrestle in opposition to bigger, extra highly effective intercontinental ballistic missiles of the kind utilized by Russia and China.
Mark Wright/AP/Missile Protection Company
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Mark Wright/AP/Missile Protection Company
President Trump has advised the Pentagon to take one other have a look at missile protection. Know-how to shoot down missiles has existed for many years, however the sort of missile protect Trump is seeking to construct can be way more advanced — and costly.
A key a part of the brand new missile protection system, which Trump described as “Golden Dome” in a speech earlier this 12 months, will probably be space-based interceptors, in keeping with specialists and an executive order signed by the president.
Plenty of protection corporations have expressed curiosity in making an attempt to construct the Golden Dome. Final week, Reuters reported that Elon Musk’s agency SpaceX had joined a bid for the undertaking. Musk later refuted that declare in a post on X.
This is why a essential a part of Golden Dome may be constructed on the ultimate frontier, and what constructing such a system would contain.
Golden Dome can be very completely different than Israel’s Iron Dome
Trump’s speech to Congress and his government order have each referenced Israel’s Iron Dome missile protect.
Iron Dome has confirmed itself extremely efficient throughout Israel’s newest wars at intercepting missiles and rockets. It depends upon a strong community of radars, computer systems, and interceptor missiles to defend cities and navy websites all through the nation.

Israel’s Iron Dome can intercept rockets fired from quick distances, however it’s ineffective in opposition to longer-ranged missiles.
Ariel Schalit/AP/AP
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Ariel Schalit/AP/AP

However constructing Iron Dome is a way more modest proposal than constructing a Golden Dome.
“It is the distinction between a kayak and a battleship,” says Jeffrey Lewis, a professor on the Middlebury Institute of Worldwide Research at Monterey, who research missile defenses.
An enormous a part of that distinction is the dimensions of the landmass that must be protected — Israel is greater than 400 instances smaller than the US, and it is largely flat desert that is straightforward to defend.
The missile risk is essentially completely different for America
“Iron Dome, essentially, is designed to cope with sluggish shifting, short-range projectiles,” Lewis says.
For essentially the most half, it shoots at missiles and rockets fired from close to the border that may sometimes fly simply tens of miles.
However the missiles Russia and China have pointed on the U.S. are fully completely different. They embrace large, highly effective intercontinental ballistic missiles that soar into house and shriek again to Earth at hypersonic speeds. Iron Dome may by no means intercept them.

A Russian Nationwide Guard soldier stands in entrance of a Yars nuclear missile throughout Victory Day Parade gown rehearsals in 2024. The Yars is a kind of intercontinental ballistic missile that may strike at hypersonic speeds.
Contributor/Getty Photographs Europe/Getty Photographs Europe
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Contributor/Getty Photographs Europe/Getty Photographs Europe
In actual fact, these greater missiles are arduous for any present missile protection system to intercept, says Laura Grego, a physicist on the non-profit Union of Involved Scientists. The perfect factor to do is attempt to hit these ICBMs proper as they’re launching from their silo, however “the launch section of these missiles solely lasts three to 5 minutes, so that you solely have some a whole bunch of seconds that you’ve accessible to catch them as they’re launching.”
To be able to catch these missiles, Golden Dome should have the excessive floor
This results in the third huge distinction between the true Iron Dome and President Trump’s futuristic Golden Dome — to hit these missiles early, a Golden Dome will probably want to incorporate expertise in house.
The concept is to have satellites in orbit that would spot missiles as they depart the bottom after which shoot them at first of their flight.

It is a system that is been considered earlier than. The issue, says Grego, is that the Earth is de facto huge, and satellites spin round it actually quick.
To be able to guarantee you may have a satellite tv for pc in place above the appropriate patch of Earth, “you want lots of issues in house so as to have them on the proper place on the proper time,” she says.
Grego was a part of an unbiased panel arrange by the American Bodily Society, which took a have a look at missile protection. Earlier this 12 months, they concluded a constellation of about 16,000 interceptors can be wanted to aim to counter a speedy salvo of about 10 stable propellant ICBMs just like North Korea’s Hwasong-18 missiles.

An artist’s rendering of Sensible Swarms, a proposed space-based missile protection system from the agency Booz Allen Hamilton. The small cubesats would act as each sensors and interceptors to catch missiles early in flight.
Booz Allen Hamilton
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Booz Allen Hamilton
An enormous constellation is feasible to construct however can be costly
The concept of getting 16,000 satellites in orbit appeared unattainable, till lately. Elon Musk’s firm SpaceX has been constructing a constellation of web satellites known as Starlink.
It has put round 7,000 satellites in orbit, with plans to launch hundreds extra.
In line with the Reuters article, SpaceX was partnering with protection tech companies Palantir and Anduril. The constellation would come with a whole bunch of missile sensing and assault satellites, the report claimed.
In his publish on X, nonetheless, Musk mentioned “our robust desire can be to remain targeted on taking humanity to Mars. If the President asks us to assist on this regard, we’ll achieve this, however I hope that different corporations (not SpaceX) can do that.”
Individually, the consulting agency Booz Allen Hamilton lately unveiled a proposal for a system of two,000 anti-missile satellites it mentioned may present a great preliminary protection, along with different techniques. The constellation’s satellites would act as each sensors and interceptors — some satellites may detect the launch after which others passing close to would whizz off to strike the incoming missile.
The agency believes it may discipline the constellation for $25 billion, “and that would come with the R&D, and many others.,” says Trey Obering, an government vp at Booz Allen Hamilton who previously served as the pinnacle of the Pentagon’s Missile Protection Company throughout George W. Bush’s administration.
Lewis thinks the numbers for Booz Allen’s constellation may find yourself being larger. Furthermore, he factors out, the constellation would require new satellites to be regularly added, as a result of regularly these satellites would fall out of their orbits. “That is $4 to $5 billion a 12 months simply to maintain,” he factors out.
If Golden Dome will get constructed, America’s rivals may adapt
Nonetheless different specialists say it’s the time to take one other have a look at space-based techniques, and Trump’s Golden Dome proposal supplies that chance.
“It is a welcome improvement and it is, in some respects, overdue,” says Tom Karako, director of the Missile Protection Venture on the Middle for Strategic and Worldwide Research. Karako says the wars within the Center East and in Ukraine present why missile protection is required. Non-nuclear missiles have grow to be a go-to weapon, he says, and Golden Dome may function a strong deterrent.

China’s navy confirmed off a brand new hypersonic ballistic nuclear missile in 2019 that would doubtlessly breach all present anti-missile shields deployed by the U.S. and its allies.
Ng Han Guan/AP/AP
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Ng Han Guan/AP/AP
“I do not wish to simply deter a nuclear change, I wish to deter a traditional struggle with China and Russia and we try this by elevating the edge,” he says.
However Lewis is extra skeptical. Typical wars apart, he says, Russia and China nonetheless rely on nuclear weapons to keep up a strategic steadiness with America. If we attempt to construct a Golden Dome, he warns, they are going to quickly broaden and improve their nuclear arsenals in response.

“We’ll find yourself with vastly bigger Russian and Chinese language nuclear forces. We’ll find yourself with the Russians and the Chinese language having all types of loopy sci-fi weapons,” he says. “In brief we’ll find yourself spending tens if not a whole bunch of billions of {dollars} to be in, at greatest, the identical place we’re as we speak, and almost certainly a a lot worse place.”
It may spark a brand new nuclear arms race, he warns, and Russia could already be making ready. The U.S. believes it is experimenting with methods of placing nuclear weapons in house, so as to destroy massive constellations of satellites like those wanted for Golden Dome.