
The U.S. army assessments its land-based Aegis missile protection system in 2018. Such methods can observe 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 instructed 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 type of missile defend Trump is seeking to construct can be rather 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, based on specialists and an executive order signed by the president.
Numerous protection corporations have expressed curiosity in attempting to construct the Golden Dome. Final week, Reuters reported that Elon Musk’s agency SpaceX had joined a bid for the challenge. Musk later refuted that declare in a post on X.
This is why a vital 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 govt order have each referenced Israel’s Iron Dome missile defend.
Iron Dome has confirmed itself extremely efficient throughout Israel’s newest wars at intercepting missiles and rockets. It is dependent upon a strong community of radars, computer systems, and interceptor missiles to defend cities and army 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 scale of the landmass that must be protected — Israel is greater than 400 occasions smaller than the USA, and it is principally flat desert that is straightforward to defend.
The missile menace is basically completely different for America
“Iron Dome, basically, 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 embody big, 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 sort of intercontinental ballistic missile that may strike at hypersonic speeds.
Contributor/Getty Photos Europe/Getty Photos Europe
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Contributor/Getty Photos Europe/Getty Photos Europe
In truth, these greater missiles are onerous for any current missile protection system to intercept, says Laura Grego, a physicist on the non-profit Union of Involved Scientists. One of the best factor to do is attempt to hit these ICBMs proper as they’re launching from their silo, however “the launch part of these missiles solely lasts three to 5 minutes, so that you solely have some a whole lot of seconds that you’ve accessible to catch them as they’re launching.”
With the intention to catch these missiles, Golden Dome should have the excessive floor
This results in the third large distinction between the actual Iron Dome and President Trump’s futuristic Golden Dome — to hit these missiles early, a Golden Dome will probably want to incorporate know-how in house.
The thought is to have satellites in orbit that would spot missiles as they go away the bottom after which shoot them at the start of their flight.
It is a system that is been considered earlier than. The issue, says Grego, is that the Earth is basically large, and satellites spin round it actually quick.
With the intention to guarantee you’ve gotten a satellite tv for pc in place above the suitable patch of Earth, “you want a variety of issues in house in an effort 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 try to counter a fast salvo of about 10 stable propellant ICBMs much like North Korea’s Hwasong-18 missiles.

An artist’s rendering of Good 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 thought of getting 16,000 satellites in orbit appeared unattainable, till lately. Elon Musk’s firm SpaceX has been constructing a constellation of web satellites referred to as Starlink.
It has put round 7,000 satellites in orbit, with plans to launch 1000’s extra.
In keeping with the Reuters article, SpaceX was taking a look at partnering with protection tech corporations Palantir and Anduril. The constellation would come with a whole lot of missile sensing and assault satellites, the report claimed.
In his publish on X, nevertheless, Musk mentioned “our sturdy choice can be to remain targeted on taking humanity to Mars. If the President asks us to assist on this regard, we’ll accomplish that, 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 superb preliminary protection, together with different methods. 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 govt vp at Booz Allen Hamilton who previously served as the top 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 greater. 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 methods, and Trump’s Golden Dome proposal offers that chance.
“It is a welcome improvement and it is, in some respects, overdue,” says Tom Karako, director of the Missile Protection Mission on the Heart 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 change into a go-to weapon, he says, and Golden Dome may function a strong deterrent.

China’s army confirmed off a brand new hypersonic ballistic nuclear missile in 2019 that would doubtlessly breach all current 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 standard battle with China and Russia and we try this by elevating the brink,” he says.
However Lewis is extra skeptical. Typical wars apart, he says, Russia and China nonetheless rely upon nuclear weapons to keep up a strategic stability with America. If we attempt to construct a Golden Dome, he warns, they are going to quickly develop 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 lot of billions of {dollars} to be in, at finest, the identical place we’re at this time, and more than likely a a lot worse place.”
It may spark a brand new nuclear arms race, he warns, and Russia might already be preparing. The U.S. believes it is experimenting with methods of placing nuclear weapons in house, in an effort to destroy giant constellations of satellites like those wanted for Golden Dome.