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NASA’s DART spacecraft changed a binary asteroid’s orbit around the sun, in a first for a human-made object

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When NASA crashed a spacecraft into the asteroid moonlet Dimorphos in 2022, it altered both Dimorphos’ orbit around its parent asteroid, Didymos, and the two objects’ orbit around the sun, according to new research. NASA’s Jet Propulsion Laboratory (JPL) said in a press release that this “marks the first time a human-made object has measurably altered the path of a celestial body around the Sun.” It’s a promising result as scientists work to find a feasible method of defending Earth from hazardous space objects.

The Double Asteroid Redirection Test (DART) mission was designed to demonstrate one possible way of deflecting such an object, targeting the non-threatening moonlet Dimorphos, which is about 560 feet wide. NASA quickly declared it a success after its initial analysis showed the planned collision shortened Dimorphos’ orbit around Didymos, the larger of the two objects in the binary asteroid system. In a follow-up study published in 2024, a team at NASA’s JPL reported that Dimorphos’ orbital period had been trimmed by about 33 minutes, as its path was nudged roughly 120 feet closer to Didymos than before. The latest study now indicates that the whole binary system was affected, not just Dimorphos. 

Didymos and Dimorphos have a 770-day orbital period around the sun, which lead author Rahil Makadia said has been changed by “about 11.7 microns per second, or 1.7 inches per hour.” That might not sound like much, but according to Makadia, “Over time, such a small change in an asteroid’s motion can make the difference between a hazardous object hitting or missing our planet.”

This article originally appeared on Engadget at https://www.engadget.com/science/space/nasas-dart-spacecraft-changed-a-binary-asteroids-orbit-around-the-sun-in-a-first-for-a-human-made-object-210529924.html?src=rss

OpenAI’s head of robotics resigns following deal with the Department of Defense

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OpenAI is going to need to find a new head of robotics. Caitlin Kalinowski, OpenAI’s now-former head of robotics, posted on X that she was resigning from her role, while criticizing the company’s haste in partnering with the Department of Defense without investigating proper guardrails.

Kalinowski, who previously worked at Meta before leaving to join OpenAI in late 2024, wrote on X that “surveillance of Americans without judicial oversight and lethal autonomy without human authorization are lines that deserved more deliberation than they got.” Responding to another post, the former OpenAI exec explained that “the announcement was rushed without the guardrails defined,” adding that it was a “governance concern first and foremost.”

OpenAI confirmed Kalinowski’s resignation and said in a statement to Engadget that the company understands people have “strong views” about these issues and will continue to engage in discussions with relevant parties. The company also explained in the statement that it doesn’t support the issues that Kalinowski brought up.

“We believe our agreement with the Pentagon creates a workable path for responsible national security uses of AI while making clear our red lines: no domestic surveillance and no autonomous weapons,” the OpenAI statement read.

Kalinowski’s resignation may be the most high-profile fallout from OpenAI’s decision to sign a deal with the Department of Defense. The decision came just after Anthropic refused to comply with lifting certain AI guardrails around mass surveillance and developing fully autonomous weapons. However, even OpenAI’s CEO, Sam Altman, said that he would amend the deal with the Department of Defense to prohibit spying on Americans.

This article originally appeared on Engadget at https://www.engadget.com/ai/openais-head-of-robotics-resigns-following-deal-with-the-department-of-defense-195918777.html?src=rss

Indonesia announces a social media ban for anyone under 16

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Following in the footsteps of Australia, Indonesia will be the latest country to limit social media usage for children under 16. Meutya Hafid, Indonesia’s communication and digital affairs minister, announced that a new government regulation will require “high-risk” platforms to delete any accounts from Indonesia that are under 16, starting on March 28.

Hafid said in the announcement that the implementation would be done in stages, starting with major platforms like YouTube, TikTok, Facebook, Instagram, Threads, X, Roblox and Bigo Live, a live-streaming platform based in Singapore. The minister added that all platforms will have to fulfill compliance obligations from the Indonesian government, but didn’t specify what they were. In response to the ban, a Meta spokesperson told The New York Times that the company hasn’t received an official regulation from the country yet and was awaiting details.

While Australia was the first country to implement such a sweeping ban on social media, many other countries are currently in the process of doing the same. Spain’s Prime Minister Pedro Sanchez announced last month that the country is also ready to ban social media for users under 16, while Malaysia‘s cabinet approved a similar ban that will reportedly go into effect sometime this year.

This article originally appeared on Engadget at https://www.engadget.com/social-media/indonesia-announces-a-social-media-ban-for-anyone-under-16-174634956.html?src=rss