Tag Archives: Beresheet

Beresheet sends back first pictures

The privately-built Israeli lunar lander Beresheet has sent back its first pictures, taken on its way to the moon.

The picture, taken 37,600 km from Earth, shows the Israeli flag and the inscription with “Am Yisrael Hai” (the People of Israel Live) in Hebrew and the inscription “Small Country, Big Dreams” in English. The spacecraft was snapped as it passed over Australia, and the photograph was taken during a very slow rotation by Beresheet. The Israeli spacecraft, built in an IAI factory, is in an elliptical orbit around Earth – its greatest distance from Earth (the apogee) at this stage is some 131,000 kilometers.

While the press wants to trivialize this image by calling it a selfie, it was taken for very important engineering reasons. It demonstrates that the camera and the spacecraft’s pointing systems are working, exactly as planned.

Beresheet will continue to raise the apogee of its orbit until it enters the Moon’s gravitational sphere of influence, when it will then shift into lunar orbit.

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Beresheet successfully completes engine burn

After a computer issue prevented its last course correction, Beresheet, the Israeli private lunar probe, successfully completed that engine burn yesterday, raising its Earth orbit’s apogee to 81,000 miles, almost a third of the way to the Moon.

The Beresheet team has not explained exactly what went wrong with the computer earlier this week, or what they have done to fix the problem. All they said is that they have figured it out and worked around it.

The next engine burn to raise the orbit further will occur in about a week.

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Beresheet’s second engine burn stopped by computer reset

It appears that the second engine burn to raise the orbit of Israel’s privately built lunar lander, Beresheet, did not happen as planned because of an unexpected computer reboot.

In a statement Tuesday morning, SpaceIL and Israel Aerospace Industries (IAI) engineers said they were investigating the malfunction, but said that other than a known problem with the navigation system’s star tracker, the Beresheet’s systems were all functioning properly.

The maneuver was scheduled to take place Monday night, as the spacecraft passed near the Earth in an area where the Ramat Gan-based SpaceIL ground crew would not be in direct communication with the craft.

During the pre-maneuver phase, the spacecraft computer reset unexpectedly, and the maneuver was automatically cancelled.

The question that immediately comes to mind: Did they purchase a space-hardened computer? Cosmic rays can wreck havoc on computer memory, causing just this type of unexpected reset, so computers in space need to be much better shielded than on Earth.

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Israeli lunar lander deploys legs

Capitalism in space: The Israeli lunar lander Beresheet, now beginning its circuitous journey to the Moon, has established communications with the Earth while deploying its landing legs.

There does appear to be an issue with the spacecraft’s star trackers, but it is not clear how critical this is.

Beresheet, by the way, means “In the beginning” in Hebrew.

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SpaceX successfully launches three satellites

Capitalism in space: SpaceX tonight used its Falcon 9 rocket, including a first stage that had already flown twice before, to launch an Indonesian communications satellite, an Air Force smallsat, and most importantly, the Israeli-built Beresheet lunar lander, the first planetary mission entirely funded from private sources.

You can get some details about Beresheet here. If all goes as planned, it will land on the Moon on April 11 and operate for two Earth days on the surface.

SpaceX was also able to successfully land that first stage, which I think is the first time they have successfully used and recovered a first stage three times. Look for this first stage to fly a fourth time.

The 2019 launch race:

2 China
2 SpaceX
1 ULA
1 Japan
1 India
1 Europe
1 Russia

The U.S. now leads China in the national rankings, 3-2.

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