Roving Mars, One Step at a Time
Spirit has taken its first sample of Martian dust, and soon it will start roving around for evidence of what used to be running water. In three days the next rover, Opportunity, will land, unfold, reach out and finally start moving around–this time on the opposite side of the planet. NASA has made a detailed computer simulation of how the rover navigates. (The more technical stuff comes in the second half.)
Time is critical. Martian dust will slowly build up on the rover’s solar arrays. It will eventually block the energy needed to recharge the batteries that keep the rover alive. The rover has to move as quickly as possible to interesting places without the need to wait for orders from Earth. The trick is to make it move automatically. And the best way to do that is not to try to plan a long journey across the Martian surface all at once, but rather to analyze just a small portion of the landscape ahead. NASA provides frequent updates of the rover’s status.
Deep Dive
Uncategorized
Our best illustrations of 2022
Our artists’ thought-provoking, playful creations bring our stories to life, often saying more with an image than words ever could.
How CRISPR is making farmed animals bigger, stronger, and healthier
These gene-edited fish, pigs, and other animals could soon be on the menu.
The Download: the Saudi sci-fi megacity, and sleeping babies’ brains
10 Breakthrough Technologies 2023
Stay connected
Get the latest updates from
MIT Technology Review
Discover special offers, top stories, upcoming events, and more.