Space travel is complex, expensive, and risky. Great sums and valuable payloads are on the line every time one spacecraft docks with another. One slip and a billion-dollar mission could be lost. Aerospace engineers believe that autonomous control, like the sort guiding many cars down the road today, could vastly improve mission safety, but the complexity of the mathematics required for error-free certainty is beyond anything on-board computers can currently handle.

In a new paper presented at the IEEE Aerospace Conference in March 2024 and published on the preprint server arXiv, a team of aerospace engineers at Stanford University reported using AI to speed the planning of optimal and safe trajectories between two or more docking spacecraft.

In 1999, Michelle Nichols saw her first total solar eclipse on a cruise in the Black Sea. It would be many years before she witnessed another one during a visit to southern Illinois in 2017.

"It seemed so far in the future," she said.

Now, Nichols, an astronomer, educator and the director of public observing at the Adler Planetarium, is planning to return to Carbondale, Illinois, where the moon will completely block out the sun for more than four minutes on April 8. It is the second time in seven years that southern Illinois has been in the path of totality, or the moon's shadow.

Rarely do these celestial bodies line up perfectly with the earth to create a total eclipse. It's even rarer for a total eclipse to plunge the same region into darkness in less than a decade.

"Any given location on Earth will see an actual, total solar eclipse on average every 375 years," Nichols said. "So you have to be at the right place, at the right time."

While Chicago is not in the path of totality again this year, the area will experience a partial eclipse, and the sky will darken.

Construction and testing are complete on the CADRE rovers, which will map the lunar surface together as a tech demo to show the promise of multi-robot missions.

A trio of small rovers that will explore the moon in sync with one another are rolling toward launch. Engineers at NASA's Jet Propulsion Laboratory in Southern California recently finished assembling the robots, then subjected them to a punishing series of tests to ensure they'll survive their jarring rocket ride into space and their travels in the unforgiving lunar environment.