A NASA space probe has just arrived at the asteroid Bennu to study it
NASA’s Osiris-Rex spacecraft has arrived at the asteroid Bennu and will shortly start studying the rock, in the hope it can uncover clues about the origin of our solar system.
The news: The spacecraft reached Bennu shortly after noon US eastern time today, after a two-year journey. This is the first NASA mission with the aim of returning an asteroid sample. It’s also the smallest object any spacecraft has ever orbited.
The mission: It will survey the asteroid from an orbit of roughly one mile, before attempting to bounce off the surface in July 2020 and collect a sample, using nitrogen gas to shift rock and other materials so it can be grabbed by an arm mechanism. The craft has enough nitrogen gas for three attempts, if this first try doesn’t work. The Osiris-Rex (which stands for Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer) is due to return the sample to Earth in September 2023.
All about Bennu: Bennu is a primitive, carbon-rich asteroid believed to be made up of leftovers from the formation of the solar system 4.5 billion years ago. Its orbit switches between those of Earth and Mars, making it what’s officially called a “near-Earth asteroid.” It is about 1,600 feet (488 meters) wide and most likely broke away from a larger asteroid between Mars and Jupiter a couple of billion years ago.
Keep Reading
Most Popular
What to know about this autumn’s covid vaccines
New variants will pose a challenge, but early signs suggest the shots will still boost antibody responses.
DeepMind’s cofounder: Generative AI is just a phase. What’s next is interactive AI.
“This is a profound moment in the history of technology,” says Mustafa Suleyman.
Human-plus-AI solutions mitigate security threats
With the right human oversight, emerging technologies like artificial intelligence can help keep business and customer data secure
Next slide, please: A brief history of the corporate presentation
From million-dollar slide shows to Steve Jobs’s introduction of the iPhone, a bit of show business never hurt plain old business.
Stay connected
Get the latest updates from
MIT Technology Review
Discover special offers, top stories, upcoming events, and more.