Lunar probe Beresheet back on track after computer hiccup
Nancy Ordman | March 01, 2019Beresheet has successfully completed a maneuver that moves the plucky spacecraft to an orbit 84,000 miles away from Earth. The Israeli space probe’s new apogee takes it about one third of the way to its ultimate destination: the moon.
The announcement of the course correction ended concern that an unplanned, independent computer reset on Feb. 24 would end Beresheet’s moon mission before it had a chance to land on the lunar surface. The reboot canceled the engine burn planned for Feb. 25, delaying the craft’s orbital change by three days. Mission scientists speculated that problems with the spacecraft’s star tracker might have caused the glitch; they have not yet announced the actual cause.
According to engineers at SpaceIL and Israel Aerospace Industries (IAI), the postponed burn worked as expected. Opher Doron of IAI pointed out that new spacecraft encounter “teething problems” once they are launched. Beresheet has overcome all problems encountered thus far.
Beresheet’s launch on Feb. 21 achieved several firsts: the first privately funded space mission and the first Israeli moon mission, and the most distance traveled to reach the moon, among others. The original idea for the probe dates back more than eight years, to a conversation between three friends in a suburban Tel Aviv bar.
The Smart car-sized probe will continue to extend the apogees of its elliptical earth-centric orbits until the moon’s gravity captures it in early April. Beresheet is expected to down in the Sea of Serenity on April 11, followed by two days studying the moon’s gravitational field.
The video accompanying this article depicts Beresheet’s journey to the moon from liftoff at Cape Canaveral through touchdown on the moon.