月球探測器SLIM：完成月球狗跑攝影！
・來自 13 個地點的 333 張全掃描影像傳送到地球
・比較月球和地球的橄欖石，調查月球的起源
我們將為您提供 JAXA 研究所發表的文章摘要。
Institute of Space and Astronautical Science: University of Aizu: Ritsumeikan University
SLIM’s Multiband Spectroscopic Camera (MBC) successfully captured his 10-band spectroscopic image.
SLIM observation images released:
JAXA has released some of the ‘SLIM observation images after power restoration’.
We were able to observe more rocks than we had originally expected.
Image of MBC equipped with SLIM (Figure 1-1)
Dog run area immediately after landing (mosaic image taken from a lunar surface scan)
Image of MBC equipped with SLIM (Figure 1-2)
Dog run area immediately after power restoration (mosaic image)
The direction of the sun was reversed and changed from east to west.
Therefore, the direction in which the shadow is cast differs between the two images.
Rocks with detailed observation of 10 bands (Figure 2)
Due to different solar radiation conditions, some rocks to be observed were changed and added.
Observing ‘Akita Inu’ (Figure 3)
After power was restored, ‘Akita Inu’ was observed using near-infrared light (wavelength 1.65μm).
MBC autofocus function:
Distance can be measured by focusing.
Once you know the distance, you can calculate the size of the rock.
It turns out that the distance to ‘Akitainu’ is 18m and the width is 63cm.
SLIM team and MBC team (Figure 4)
Completed observations at MBC:
1. After the SLIM power was restored, 333 full-scan images were taken twice at different wavelengths.
2. High-resolution 10-band observations of rocks and regolith were conducted at 13 locations.
Based on the data, we will proceed with identifying rocks and analyzing the chemical composition of minerals.
Scientific results will be announced as soon as they are obtained.
https://www.isas.jaxa.jp/topics/003674.html
Investigation of the origin of the moon: Comparison of olivine from the moon and Earth
SLIM successfully made a high-precision landing on a gravitational object.
ISAS/JAXA begins investigating the origin of the moon.
SLIM: (Smart Lander for Investigating Moon)
SLIM demonstrates the ‘high-precision landing’ required for future lunar and planetary exploration.
With the realization of SLIM, “landing on a planet with stricter weight restrictions than the moon” will become a reality.
Sample return from the lunar surface:
Also, if we plan to conduct sample returns from the lunar surface in the future.
1. If we launch a SLIM-class return vehicle from the lunar surface,
2. The Hayabusa capsule can be sent to Earth.
Solving the mysteries of the moon’s formation and evolution:
There is a theory that the moon was formed by a giant impact.
In this case, the mantle composition (=90% of the Moon) would be similar to that of the Earth.
1. The mantle is the material inside the moon.
2. It is difficult to directly examine the composition of the mantle on the lunar surface.
3. It is important to investigate the places where the mantle is exposed on the lunar surface.
The importance of pinpoint landing:
Near the crater, “material thought to be derived from the mantle” is exposed.
SLIM made a pinpoint landing near the crater and conducted on-the-spot observations.
Inside and around the crater:
Inside and around the crater excavated by a meteorite impact.
There are places where lunar internal materials are thought to have been exposed.
Important discoveries made by the lunar orbiting satellite “Kaguya”:
One of the important discoveries of the lunar orbiting satellite “Kaguya”.
Discovered a place on the moon’s surface where material thought to be derived from the mantle is exposed.
Comparing olivine from the Moon and Earth:
Specifically, there is a rock that contains mantle material called olivine.
What is olivine:
A time when the primordial moon was still hot and melting.
Materials with high specific gravity that have sunk inside the lunar mantle (reference image)
Comparing the composition of olivine with that of Earth, we will explore the mysteries of the formation and evolution of the Moon.
Multi-Band Camera: The importance of MBC
SLIM investigates the composition of olivine.
For this purpose, it is equipped with Multi-Band Camera: MBC.
MBC features:
1. Split the reflected light of sunlight on the moon’s surface into different colors (divided into rainbow colors)
2. Examine the intensity of light at each wavelength
In the future, we aim to determine the composition of olivine.