Welcome to this week’s installment of The Intelligence Brief… now that NASA’s investigation team has had time to go through the data following its Double Asteroid Redirection Test (DART) experiment, the preliminary results are in, and things are looking encouraging. We’ll be looking at 1) what NASA officials have learned following the spacecraft’s impact with asteroid Dimorphos, 2) the amount of change in the asteroid’s orbit around its parent, and why this was seen as being so successful, and 3) how NASA officials are responding to the promising results of the study.
Quote of the Week
“Asteroids have us in our sight. The dinosaurs didn’t have a space program, so they’re not here to talk about this problem. We are, and we have the power to do something about it.”
Meanwhile, in video news and podcasts, early internet pioneer and longtime researcher of unidentified aerial phenomena Jacques Vallée recently joined us for a discussion on Rebelliously Curious with Chrissy Newton. Be sure to check out the interview and all our other video content on our YouTube channel. And, of course, check out all of our recent stories, which we’ve included at the end of this week’s newsletter.
With all that behind us, here’s what you need to know about NASA’s recent DART spacecraft experiment and how the technology it employed has now proven successful in potentially saving our planet from an asteriod impact.
NASA Offers Promising DART Mission Update
NASA reports that its Double Asteroid Redirection Test (DART) experiment, which launched a spacecraft into the asteroid Dimorphos, succeeded in its mission to alter its orbit.
It is the first time a spacecraft has changed the motion of an object in space, and it showcases the promise of kinetic impactor technology for future efforts to protect Earth from potentially deadly impact events.
“Analysis of data obtained over the past two weeks by NASA’s Double Asteroid Redirection Test (DART) investigation team shows the spacecraft’s kinetic impact with its target asteroid, Dimorphos, successfully altered the asteroid’s orbit,” read a NASA statement. “This marks humanity’s first time purposely changing the motion of a celestial object and the first full-scale demonstration of asteroid deflection technology.”
Not only has the efficacy of NASA’s DART spacecraft been demonstrated in the successful experiment, but data collected during the collision is now arming astronomers with potentially vital information that will aid in planetary defense for decades to come.
A Smashing Success
Leading up to the impact, the Dimorphos spent almost a full twelve hours in its normal orbit around Didymos, its parent asteroid. Viewing the impact event through telescopes, astronomers were able to watch the impressive collision and measure the alteration that occurred to the asteroid’s orbit. According to data assessments, NASA’s investigation unit reports that Dimorphos’ orbit around Didymos changed by more than half an hour, significantly shortening its orbit.
NASA reports an uncertainty margin for its estimate of no more than two minutes, indicating the significant change to Dimorphos’ orbit around Didymos. Significantly, the reported amount of change far exceeds some of NASA’s early estimates as far as what it identified as minimum success requirements.
“Before its encounter, NASA had defined a minimum successful orbit period change of Dimorphos as change of 73 seconds or more,” the space agency reported in an updated statement on October 11. “This early data show DART surpassed this minimum benchmark by more than 25 times.”
A View from the Ground and an Encouraging Future
Astronomers watching the collision watched as the DART spacecraft plowed into Dimorphos, launching a cloud of debris that resulted in an almost cometlike appearance as dust and stone spread through space over a distance of several thousands of miles.
NASA experts spoke with excitement following the successful mission.
“Let’s all just kind of take a moment to soak this in,” said Lori Glaze, NASA’s director of planetary science. “[F]or the first time ever, humanity has changed the orbit” of a celestial body.”
Conveying his trademark enthusiasm, NASA Administrator Bill Nelson emphasized the implications of such potentially planet-saving technologies going forward.
“All of us have a responsibility to protect our home planet,” Nelson was quoted saying in a press release. “After all, it’s the only one we have.”
However, Nelson also discussed the encouraging potential for future use of kinetic impact technologies, should we ever have to rely on them for planetary protection in advance of a real impact scenario.
“This mission shows that NASA is trying to be ready for whatever the universe throws at us. NASA has proven we are serious as a defender of the planet.”
“This is a watershed moment for planetary defense and all of humanity,” Nelson added, “demonstrating commitment from NASA’s exceptional team and partners from around the world.”
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