Lunar Lander Reports Colder-Than-Expected Temps
China is in the middle of a multi-part mission to explore the moon with unmanned landers, the most recent of which is Chang’e-4. This intrepid little probe made history when it became the first object to make a soft landing on the far side of the moon. Now, it’s busily taking measurements and sending them back to Earth. According to the China National Space Administration (CNSA), Chang’e-4 has found the moon to be more frigid than expected. Hopefully, it packed a blanket.
While we often hear the far side of the moon referred to as the “dark side,” that’s an inaccurate description. This side faces away from Earth, but it gets plenty of sunlight as Earth and the moon (which is tidally locked) rotate. Landing on the far side is a significant challenge not because it’s dark, but because there’s no direct line of sight to Earth. The entire landing needs to be automated, and Chang’e-4 nailed it.
Shortly after landing on January 3rd, Chang’e-4 deployed the Yutu-2 rover. Following that, the CNSA put Chang’e-4 into sleep mode for two weeks during the lunar night. When the probe came back online, it reported to ground control the temperatures it experienced on the far side of the moon. Let’s just say the moon isn’t an ideal vacation spot. Chang’e-4 saw temperatures go as low as -310 degrees Fahrenheit (-190 degrees Celsius).
Before Chang’e-4, scientists generally considered -280 degrees Fahrenheit to be the low for the moon. However, those readings all came from the near side of the moon. As we already covered, the far side of the moon is not permanently shrouded in darkness, so what gives? The initial hypothesis from the Chang’e team is that the differing composition of lunar soil on the far side could be responsible for the colder temperatures.
Yutu-2 might be able to clear things up as its mission continues. The rover includes a Visible and Near-Infrared Imaging Spectrometer (VNIS) capable of identifying surface materials and trace atmospheric gasses. The CNSA designed the rover to operate for at least three months and the lander for a year. The last Chang’e lander started to degrade right around of the primary mission, so don’t expect this lander to produce new discoveries for years to come.
Continue reading
NASA Delays Lunar Contracts, Casting Doubt on 2024 Moon Landing
Many observers expected this move based on the funding approved by Congress and the ongoing effects of the pandemic, but it's still a disappointment for anyone who held out hope for a 2024 landing.
NASA and Blue Origin Will Simulate Lunar Gravity With Spinning Rockets
Bezos' Blue Origin rockets are still taking shape, but the company has announced a partnership with NASA to improve artificial gravity testing. Basically, they're going to make rockets spin.
New Spherical Robot Could Explore Lunar Caves
We don't know much about the moon's subsurface environment, but the same was true of the moon's surface in the past. To explore these unseen depths, the European Space Agency is evaluating a spherical robot bristling with spinning cameras.
NASA Chooses SpaceX Starship for Human Lunar Landing
After reviewing designs from Dynetics, SpaceX, and Blue Origin, NASA has decided to go with SpaceX and the Starship.