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Top Results for Jaxa

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Rankings use category fit, feature coverage, pricing signals, public reception, and recency. Affiliate relationships do not affect scores.

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Best 1 Hayabusa Asteroid Samples (Itokawa)

The Hayabusa asteroid samples consist of microscopic dust grains collected from the surface of near-Earth asteroid 25143 Itokawa by the Japan Aerospace Exploration Agency (JAXA). The Hayabusa spacecraft returned these samples to Earth in June 2010, marking the first successful asteroid sample return...

9.12 Excellent
Why this score

First asteroid samples returned to Earth, representing a landmark engineering achievement and major planetary-science resource despite their microscopic scale.

ui.x_scoring_methodology
2 HTV-1 (Kounotori)

HTV-1, also designated Kounotori 1, was the inaugural flight of the H-II Transfer Vehicle, an uncrewed cargo spacecraft developed by the Japan Aerospace Exploration Agency (JAXA). It launched on an H-IIB rocket on September 11, 2009, from the Tanegashima Space Center, delivering supplies to the Inte...

8.58 Great
Why this score

Successful Japanese cargo vehicle debut delivered large external and pressurized payloads, establishing a highly reliable ISS logistics system.

ui.x_scoring_methodology
3 Hayabusa2
Hayabusa2

The Hayabusa2 mission, developed by JAXA, successfully collected and returned samples from the asteroid Ryugu. This active space mission deployed a spacecraft to study the near-Earth asteroid, analyzing its composition and surface features. The returned material provides invaluable data for scientis...

4 ALOS-2
ALOS-2

ALOS-2 (Advanced Land Observing Satellite-2) is a Japanese Earth observation satellite operated by JAXA and launched in 2014. Equipped with an L-band synthetic aperture radar (SAR) sensor, it can observe the Earth's surface day and night, even in adverse weather conditions. The spacecraft provides h...

8.55 Great
Why this score

Excellent L-band SAR mission with strong disaster-monitoring reputation, technical reliability, and major operational value.

ui.x_scoring_methodology
5 SELENE
SELENE

The SELENE mission, formerly known as Kaguya, is a Japanese space exploration project operated by JAXA. It deployed an orbiter to map the Moon in unprecedented detail. The mission’s high-resolution imagery and video data significantly advanced our understanding of lunar geology and surface features....

8.54 Great
Why this score

Kaguya earned strong scientific acclaim for lunar topography, farside gravity, HDTV imagery, and long operations with few major weaknesses.

ui.x_scoring_methodology
6 Hinode (Solar-B)

Hinode, meaning 'sunrise,' is a solar observation satellite developed by the Japan Aerospace Exploration Agency (JAXA) in collaboration with NASA and the UK's Science and Technology Facilities Council. Launched in September 2006, it carries three instruments: the Solar Optical Telescope, X-Ray Teles...

8.48 Great
Why this score

Long lived solar observatory produced influential magnetic field and coronal research; strongly respected scientifically despite limited recognition outside heliophysics.

ui.x_scoring_methodology
7 ALOS
ALOS

ALOS (Advanced Land Observing Satellite), also called Daichi, was a JAXA Earth observation satellite launched on an H-IIA rocket in January 2006 from Tanegashima, Japan. It carried three instruments: PRISM for panchromatic stereo mapping at 2.5-meter resolution, AVNIR-2 for multispectral imaging, an...

8.35 Great
Why this score

JAXA flagship combining optical and L-band SAR, highly valued for mapping and disasters, despite ending earlier than ideal.

ui.x_scoring_methodology
8 Kaguya (SELENE)

Kaguya, officially named SELENE (Selenological and Engineering Explorer), was a Japanese lunar orbiter launched by the Japan Aerospace Exploration Agency (JAXA) on September 14, 2007. The spacecraft carried 14 scientific instruments to study the Moon's surface, gravity field, and electromagnetic env...

8.33 Great
Why this score

Highly successful lunar orbiter delivered major gravity, topography, mineralogical, and high definition imaging results; respected scientifically but less prominent publicly.

ui.x_scoring_methodology
9 Suzaku (ASTRO-EII)

Suzaku, originally designated ASTRO-EII, was a Japanese X-ray astronomy satellite launched in 2005 and operated through a collaboration led by JAXA. Its instruments studied high-energy objects and processes, including black holes, supernova remnants, active galactic nuclei, and the hot gas within ga...

8.22 Great
Why this score

Productive decade of X-ray astronomy generated important black hole and cluster research; instrument cooling failure reduced capability but did not negate strong output.

ui.x_scoring_methodology
10 SELENE (Kaguya)

SELENE, formally designated as Kaguya, was a Japanese lunar exploration mission operated by the Japan Aerospace Exploration Agency (JAXA). Launched in September 2007, it was the largest lunar mission since the Apollo program, consisting of a main orbiter and two smaller relay and VLBI satellites. Th...

8.20 Great
Why this score

Major lunar orbiter with high-resolution mapping and HDTV Earthrise imagery, strong science reputation.

ui.x_scoring_methodology
11 HTV Kounotori

The H-II Transfer Vehicle (HTV), nicknamed Kounotori, was an uncrewed cargo spacecraft developed by the Japan Aerospace Exploration Agency (JAXA). It was designed to resupply the International Space Station (ISS) with pressurized and unpressurized cargo, water, and experiment racks. Between 2009 and...

8.15 Great
Why this score

Highly capable Japanese ISS cargo vehicle with strong reliability and large external cargo capacity.

ui.x_scoring_methodology
12 Hayabusa
Hayabusa

The Hayabusa mission, developed by JAXA, successfully retrieved microscopic samples from the asteroid Itokawa in 2010. This marked a historic first, as it was the initial space mission to return material collected from an extraterrestrial body. Scientists utilize these samples to study the compositi...

13 Arase (ERG)

Arase, also known as ERG (Exploration of energization and Radiation in Geospace), is a satellite launched by the Japan Aerospace Exploration Agency (JAXA) on December 20, 2016. It studies the dynamics of Earth's radiation belts and the mechanisms behind space storms in geospace. The spacecraft obser...

8.10 Great
Why this score

Successful radiation belt observatory delivered coordinated particle and wave measurements; respected scientific output and longevity, with limited broader visibility.

ui.x_scoring_methodology
14 QZSS-1 (Michibiki-1)

QZSS-1 (Michibiki-1), launched by JAXA in 2010, was Japan's first Quasi-Zenith Satellite System spacecraft, designed to augment GPS signals over Japan and the Asia-Oceania region from a quasi-zenith orbit.

8.00 Great
Why this score

Pioneering Japanese QZSS satellite improving urban and mountainous GPS availability, strong regional navigation importance.

ui.x_scoring_methodology
15 QZSS-2 (Michibiki-2)

QZSS-2 (Michibiki-2), launched by Japan in 2017, was the second satellite in the Quasi-Zenith Satellite System, helping establish the four-satellite constellation that began providing Japan with near-continuous domestic coverage.

7.85 Good
Why this score

Key QZSS constellation builder with reliable augmentation role, valuable regionally but less historic than Michibiki-1.

ui.x_scoring_methodology
16 Suisei
Suisei

Suisei, meaning "comet" in Japanese, was an unmanned space probe developed by the Institute of Space and Astronautical Science. Launched in 1985, the spacecraft was tasked with observing Halley's Comet during its 1986 inner solar system passage. It carried an ultraviolet imaging system to study the...

7.84 Good
Why this score

Successfully imaged Halley's ultraviolet hydrogen corona and measured solar wind interactions; respected contribution to the international Halley campaign with limited payload scope.

ui.x_scoring_methodology
17 XRISM
XRISM

XRISM (X-Ray Imaging and Spectroscopy Mission) is a space observatory jointly developed by JAXA and NASA, launched in September 2023. The satellite is equipped with a high-resolution X-ray microcalorimeter and an X-ray imager, specifically designed to measure the extreme high-energy phenomena occurr...

18 Hinode
Hinode

Hinode, which translates to "sunrise" in Japanese, is a solar observation satellite developed by the Japan Aerospace Exploration Agency (JAXA) in collaboration with NASA and the UK Space Agency. Launched in September 2006, the spacecraft is designed to study the Sun's magnetic fields and dynamic phe...

19 Sakigake
Sakigake

Sakigake was an uncrewed space probe launched by Japan's Institute of Space and Astronautical Science in January 1985. It holds the distinction of being Japan's first interplanetary spacecraft. Along with its sister probe, Suisei, Sakigake was part of an international fleet of spacecraft deployed to...

7.72 Good
Why this score

Japan's first interplanetary spacecraft successfully investigated solar wind near Halley's Comet; historic and technically meaningful, though scientifically modest beside Giotto.

ui.x_scoring_methodology
20 Kaguya
Kaguya

Kaguya, officially designated as SELENE (Selenological and Engineering Explorer), was a lunar orbiter mission developed by the Japan Aerospace Exploration Agency (JAXA). Launched in 2007, the spacecraft was tasked with collecting detailed scientific data about the Moon's origin and evolution. It car...

21 QZSS-3 (Michibiki-3)

QZSS-3 (Michibiki-3) is a geostationary satellite launched by Japan in 2017 as part of the Quasi-Zenith Satellite System, providing stable coverage over the Asia-Oceania region alongside the quasi-zenith orbit satellites.

7.70 Good
Why this score

Useful geostationary QZSS component providing stable augmentation coverage, technically solid but narrow regional role.

ui.x_scoring_methodology
22 ASCA
ASCA

The Advanced Satellite for Cosmology and Astrophysics (ASCA), known as ASTRO-D before launch, was a Japanese X-ray astronomy satellite launched in February 1993. It was equipped with X-ray telescopes using CCD detectors, making it the first X-ray satellite to use CCD technology for imaging and spect...

23 Suzaku
Suzaku

Suzaku was a Japanese space telescope developed for X-ray astronomy by the Japan Aerospace Exploration Agency in collaboration with institutions including NASA. Launched in 2005 as Astro-E2, it carried imaging spectrometers and a hard X-ray detector for studying energetic objects and processes, incl...

24 IKAROS
IKAROS

IKAROS (Interplanetary Kite-craft Accelerated by Radiation Of the Sun) was an experimental spacecraft developed by the Japan Aerospace Exploration Agency (JAXA). Launched in 2010 alongside the Akatsuki Venus probe, it became the first spacecraft to successfully demonstrate solar sail technology in d...

25 Yohkoh
Yohkoh

Yohkoh, originally designated as the Solar-A mission, was a Japanese solar observation satellite launched in 1991. The spacecraft was specifically engineered to observe high-energy phenomena on the Sun, capturing X-ray images of solar flares and the corona. The mission represented a collaborative ef...

26 MMX (Martian Moons eXploration)

The Martian Moons eXploration (MMX) is a robotic space mission currently in development by the Japan Aerospace Exploration Agency (JAXA). The mission is designed to survey Mars's two moons, Phobos and Deimos, and to collect and return a surface sample from Phobos to Earth. By analyzing these samples...

7.35 Good
Why this score

Scientifically compelling Phobos sample return design could resolve Martian moon origins, but launch, landing, and return performance remain unproven.

ui.x_scoring_methodology
27 SLIM
SLIM

SLIM was Japan's lunar lander built by JAXA to demonstrate pinpoint landing, making Japan the fifth country to soft-land on the Moon. It successfully touched down on January 19, 2024, achieving a precise landing within 100 meters of its target despite landing upside down due to an engine anomaly.

28 Akatsuki
Akatsuki

Akatsuki, also known as the Venus Climate Orbiter, is a JAXA spacecraft launched in 2010 to study the atmospheric dynamics of Venus. After its initial orbital insertion failed, JAXA successfully inserted it into a highly elliptical orbit around Venus in 2015, where it continues to observe the planet...

29 Akari
Akari

Akari, originally known as ASTRO-F, was an infrared astronomy satellite developed by the Japan Aerospace Exploration Agency (JAXA). Launched in 2006, the space observatory was equipped with a 68.5-centimeter cryogenically cooled telescope to survey nearly the entire sky in infrared, near-infrared, a...

30 Geotail
Geotail

Geotail was a joint Japanese and United States space mission launched in 1992 to investigate Earth's magnetosphere, especially the long magnetotail formed on the night side by interaction with the solar wind. The spacecraft measured magnetic fields, electric fields, plasma, and energetic particles w...

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Frequently Asked Questions

What leads the Jaxa ranking?

Hayabusa Asteroid Samples (Itokawa) currently leads the Jaxa results with a displayed score of 9.12/10. This is an editorial ranking result for the items included on this page, not a universal verdict for every use case.

How should I read the score and confidence label?

The 0 to 10 score is Lunoo's ranking judgment. Strong confidence means 10 or more recorded comparison checks, some means 2 to 9, and provisional means fewer than 2.

What supports this ranking?

Lunoo combines category fit, feature coverage, pricing and value signals, public reception, recency, and peer comparisons. Public source links support factual item details when available, but they are not required for membership in this 40-item ranking.

Can I compare the leading results for Jaxa?

Yes. The comparison links put adjacent leaders side by side so you can inspect differences that one ranking score cannot capture.

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