Beautiful Virgin Islands

Monday, Jun 23, 2025

Nasa to crash $330m spacecraft into asteroid to see if impact can alter course

Nasa to crash $330m spacecraft into asteroid to see if impact can alter course

Space agency to cause collision with Dimorphos to avert sci-fi fears of catastrophic impact with Earth

In a few weeks, Nasa controllers will deliberately crash their $330m Dart robot spacecraft into an asteroid. The half-tonne probe will be travelling at more than four miles a second when it strikes its target, Dimorphos, and will be destroyed.

The aim of this kamikaze science mission is straightforward: space engineers want to learn how to deflect asteroids in case one is ever discovered on a collision course with Earth. Observations of Dart’s impact on Dimorphos’s orbit will provide crucial data about how well spacecraft can protect Earth from asteroid armageddon, they say.

“We know asteroids have hit us in the past,” said Professor Alan Fitzsimmons, an astronomer at Queen’s University Belfast. “These impacts are a natural process and they are going to happen in the future. We would like to stop the worst of them.

“The problem is that we have never tested the technology which will be needed to do that. That is the purpose of Dart,” said Fitzsimmons, a member of the science team for the Double Asteroid Redirection Test (Dart) mission. Launched last November, the probe is scheduled to strike its target in the early hours of 27 September, BST. By carefully studying the asteroid’s path after the collision, scientists believe they will better understand how similar collisions could be used to deflect Earth-bound asteroids and comets.

“Dart’s target has been carefully chosen,” said Jay Tate, director of the National Near Earth Objects Information Centre in Knighton, Powys. “Dimorphos actually orbits another, bigger asteroid called Didymos, and the extent of the deflection caused by the crash will be easier to detect as astronomers have been carefully observing its path around the bigger asteroid.”

Impacts by asteroids and comets have had big effects on life on Earth in the past. The best known collision occurred 66 million years ago when a 10 km wide asteroid struck Chicxulub in the Yucatán Peninsula in Mexico. The collision created a blast that had the energy of several billion atomic bombs and led to the destruction of 75% of all plant and animals species, including all land-based dinosaurs.

Since then, films such as Don’t Look Up, Armageddon and Deep Impact have depicted similar devastation being triggered by asteroid or comet crashes in modern times. However, astronomers believe it is unlikely we will experience such catastrophic impacts in real life in the near future.

Leonardo DiCaprio and Jennifer Lawrence in Don’t Look Up, a film about two astronomers who try to warn about a comet heading for Earth.


“We know where the big asteroids are because we can see them with our current generation of telescopes, and we know none of the detected asteroids are coming anywhere near our planet for the next couple of hundred years or so. So we can rest easy in our beds about those ones,” added Fitzsimmons.

“However, many smaller ones have yet to be detected, and they are still big enough to destroy entire cities and devastate large areas. We are mapping these smaller objects with increasing accuracy but we will have to be prepared to act if we find one that is on course for Earth. Dart is the first step in ensuring we havethe right technology to deal with the threat.”

Nasa’s Double Asteroid Redirection Test, or Dart mission, will crash a spacecraft into an asteroid and measure deflections in its orbit
Source and Image: Nasa


It is a point backed by Nasa’s planetary defence officer, Lindley Johnson, who stressed the importance of developing asteroid deflection technology as soon as possible. “We don’t want to be in a situation where an asteroid is headed toward Earth and then have to be testing this kind of capability.”

An example of the danger posed by small asteroids and comets is provided by the rocky object that penetrated Earth’s atmosphere near the Russian city of Chelyabinsk on 15 February 2013. Thought to have been 20 metres in diameter, it exploded in the atmosphere, triggering a 400 kiloton blast that injured more than 1,500 people.

“Had that object entered the atmosphere a mere 20km further north than it did, it would have done much greater damage to the city,” said Tate. “We have been very lucky not to have taken substantial casualties from these things within living memory. We have to be aware that they will happen one day, and be ready to do something about them.”

Dart’s target, Dimorphos, is 160 metres in diameter and orbits its parent asteroid every 12 hours. Ten days before impact, the spacecraft will release a purse-sized Italian-built probe, called LiciaCub, which is fitted with two cameras that have been given the Star Wars-inspired names of Luke and Leia. Images of Dart’s asteroid impact will be recorded by Luke and Leia and beamed back to ground controllers.

Earth-based telescopes will then study the asteroid and pinpoint how its orbit has been changed. “That way, we will get an idea how easy it is going to be to deflect incoming asteroids or comets,” said Tate.

A tidal wave hits New York in director Mimi Leder’s 1998 film Deep Impact, also involving a deadly comet.


In addition, the European Space Agency is set to send a robot spacecraft, Hera, in 2024 to Dimorphos to study the crater left by Dart and analyse its collision with the asteroid.

“Hitting Dimorphos is not going to be easy,” said Fitzsimmons. “It is only 160 metres in diameter and the spacecraft will be travelling at four miles a second. Hitting the asteroid dead centre – where the crash will have most effect – will push Dart’s autonomous navigation devices to their limit.

“Nasa engineers and scientists have done a tremendous job and are confident this should absolutely work. But you never really know until you have done it,” Fitzsimmons said.

Newsletter

Related Articles

Beautiful Virgin Islands
0:00
0:00
Close
Starmer Invites Innovators to Join Government Talent Scheme
UK Economy’s Strong Opening Quarter Shows Signs of Cooling
Harrods Seeks Court Order to Secure Al Fayed Estate for Victims
BA and Singapore Airlines Cancel Dubai Flights Amid Middle East Tensions
Trump Faces Backlash from MAGA Base Over Iran Strikes
Meta Bets $14 B on Alexandr Wang to Drive AI Ambitions
WATCH: Israeli forces show the aftermath of a massive airstrike at Iran's Isfahan nuclear site
FedEx Founder Fred Smith, ‘Heart and Soul’ of the Company, Dies at 80
Chinese Factories Shift Away from U.S. Amid Trump‑Era Tariffs
Pimco Seizes Opportunity in Japan’s Dislocated Bond Market
Labubu Doll Drives Pop Mart to Status as China’s Most Valuable Toy Maker
Global Coal Demand Defies Paris Accord Goals
We have new information and breaking details to share about what is shaping up to be a historic air campaign tonight
Six Massive Bombs Dropped on Fordow; Trump: 'A Historic Moment for the U.S., Israel, and the World'
Fordow: Deeply Buried Iranian Enrichment Site in U.S.–Israel Crosshairs
United States Conducts Precision Strikes on Iran’s Nuclear Sites
US strikes Iran nuclear sites, Trump says
Pakistan to nominate Trump for Nobel Peace Prize.
BBC Demands Perplexity AI Immediately Stop Using Its Content
Telegram Founder: I Will Leave My Fortune to Over 100 of My Children
Political Turmoil Resurfaces in Belgium Amid Economic Concerns
Fed policymakers divided on timing of interest rate cuts
Trump signals imminent agreement with Harvard University
Inheritance tax referendum alarms Swiss billionaire community
Japan cancels bilateral security meeting amid US defence demands
AI skeptic Emily Bender warns that ‘the emperor has no clothes’
Israel Confirms Assassination of Quds Force Commander in Tehran
16 Billion Login Credentials Leaked in Unprecedented Cybersecurity Breach
Senate hearing on who was 'really running' Biden White House kicks off
Iranian Military Officers Reportedly Seek Contact with Reza Pahlavi, Signal Intent to Defect
FBI and Senate Investigate Allegations of Chinese Plot to Influence the 2020 Election in Biden’s Favor Using Fake U.S. Driver’s Licenses
Vietnam Emerges as Luxury Yacht Destination for Ultra‑Rich
Plans to Sell Dutch Embassy in Bangkok Face Local Opposition
China's Iranian Oil Imports Face Disruption Amid Escalating Middle East Tensions
Trump's $5 Million 'Trump Card' Visa Program Draws Nearly 70,000 Applicants
DGCA Finds No Major Safety Concerns in Air India's Boeing 787 Fleet
Airlines Reroute Flights Amid Expanding Middle East Conflict Zones
Elon Musk's xAI Seeks $9.3 Billion in Funding Amid AI Expansion
Trump Demands Iran's Unconditional Surrender Amid Escalating Conflict
Israeli Airstrike Targets Iranian State TV in Central Tehran
President Trump is leaving the G7 summit early and has ordered the National Security Council to the Situation Room
Taiwan Imposes Export Ban on Chips to Huawei and SMIC
Israel has just announced plans to strike Tehran again, and in response, Trump has urged people to evacuate
Netanyahu Signals Potential Regime Change in Iran
Juncker Criticizes EU Inaction on Trump Tariffs
EU Proposes Ban on New Russian Gas Contracts
Analysts Warn Iran May Resort to Unconventional Warfare
Iranian Regime Faces Existential Threat Amid Conflict
Energy Infrastructure Becomes War Zone in Middle East
UK Home Secretary Apologizes Over Child Grooming Failures
×