April 24-30, 2023 / Vol 42, No 17 / Hawai`i Island, USA

Success of ispace Moon Landing April 25 Would Be 1st Luna Touchdown for Japan and Commercial Space

Hakuto-R Mission 1 lunar lander is set for April 25 touchdown in Atlas Crater (47.5°N, 44.4°E) at 16:40 UTC about 135 days since its launch. Alternative landing dates and sites are Lacus Somniorum, Sinus Iridium and Oceanus Procellarum on April 26, May 1 or May 3. If successful, ispace will accomplish the significant first independent lunar landing and first for Japan. JAXA Smart Lander for Investigating Moon (SLIM) mission is tentatively set for August launch. About 1-hour before soft landing, ~1,000-kg Hakuto-R will fire its main propulsion system to decelerate from 100-km orbit. 30 minutes after landing it will aim to establish its power and X-band communication systems to support ~30 kg of public and private payloads including UAE Rashid 10-kg rover and 8-cm diameter sphere, 0.25-kg JAXA SORA-Q rover. The lander is planned to retrieve regolith – ownership of which will be transferred to NASA. ispace, founded in 2010, now has an estimated 200 employees aiding its goal to develop a cislunar ecosystem. Flight model build for Mission 2 (NET 2024) is starting in Germany. The mission will advance lunar transportation & data services, and collect lunar regolith with its microrover. As a design agent and subcontractor, Mission 3 lander (NET 2025) under Draper US$73M NASA CLPS contract will carry AstronetX lunar camera, Aviv Labs greenhouse experiment, CesiumAstro communications / and other payloads. (Image Credits: ispace)

MONDAY

Apr 24 International Space Station, ~415-km LEO: Expedition 69 seven-member crew planning 2 EVAs this week to relocate hardware and prepare cables for solar arrays; connecting with students for 9 minutes at a time via Ham Radio.

Apr 24 Tiangong Space Station, ~390-km LEO: Shenzhou-15 three-member crew stowing equipment after final EVA for crew, working with Tianzhou 5 cargo before planned May ship departure.

Highlights…

o NewSpace: Rocket Lab to fly refurbished Rutherford engine during TBA Q3 Electron launch; Sierra Space teams with ILC Dover to produce Large Integrated Flexible Environment (LIFE) modules for commercial space stations; ALE of Japan plans Sky Canvas artificial meteor shower / atmosphere data collection 2025.

☆ Solar System: Mars moons Phobos and Deimos to undergo spectral analysis via MMX mission under US$650,000 NASA grant; JUICE systems / instrument checks ongoing while taking images en route to Jupiter; NASA Science Mission Directorate soliciting input on New Horizons potential to become heliospheric science probe.

☆ Galaxy: TESS continuing exoplanet search in 5th year, having now mapped 93% of the sky, generating 252 TB of full-frame images with 192 pixels / ea; New analysis of EHT data used to create first black hole image with PRIMO algorithm may cause re-assessment of M87* size estimated at 5,400,000-6,500,000 M☉.

o Global: ESA to consider human spaceflight and Europe launch capabilities at June space summit in Spain ahead of 2025 ministerial council (CM25); Epsilon S fuel system being reviewed by JAXA following fuel line blockage identified as cause of Epsilon-6 failure; India releases new space policy regarding public & private cooperation.

USA: Moon-to-Mars Architecture Definition Document clarifies Artemis design, NASA to hold events giving partners opportunities to comment this summer; 10-year identification / action plan outlined in NASA National Planetary Defense Strategy document; Collins Aerospace advancing spacesuit for LEO / ISS.

● Hawai’i: Astrometric data from Gaia leads NAOJ scientists Thayne Currie and Julien Lozi to utilize Subaru SCExAO and CHARIS instruments to directly image exoplanet HIP 99770 b; applications open until May 15 for PISCES STARS (STEM Aerospace Research Scholars) program; Hōkū Keʻa teaching telescope approved to be decommissioned later this year.

= Terrestrial and… o = International terrestrial events

= Moon activity

= Space and… = International space / astro events in Hawaii Standard Time unless noted. Add 10 hours to obtain UT (‘Universal Time’).


Weekly Planet Watch Evening Planets: Venus (W), Mars (W); Morning Planets: Saturn (ESE).


Space Tourism Conference Gathering Orbital / Lunar Exploration, Entertainment, Hospitality Communities

With theme Expanding the Space Experience Economy, Space Tourism Conference 2023 is set to bring high profile figures within the emerging industry for a 1-day event at Renaissance Hotel LAX being held April 28, in commemoration of the launch of Soyuz TM-32 carrying first space tourist, Dennis Tito, to ISS April 30, 2001. Registration and an invite-only social mixer will be held April 27, while the conference proper will open with session ‘Designing Space Places: Luxury Meets Practicality’ featuring Axiom consultant Marie-Lise Baron, Colonize Mars blockchain game creator Hunter Stanchak and John Spencer, who founded the Space Tourism Society in 1996 – 19 chapters now exists in USA, Malaysia, South Korea, Canada, Brazil, Mexico, Nigeria, Iran and other countries. Health, safety and wellness, resource extraction / manufacturing, cuisine, the overview effect, sustainability, marketing, sports, media and space-themed experiences on Earth will be focus of panel discussions throughout the day. Looking forward, private space travel is likely to provide economic impetus to human activity in space, with a slew of commercial space stations in the works: Blue Origin and Sierra Space Orbital Reef, Nanoracks and Voyager Space Starlab and a Cygnus-based station by Northrop Grumman are being developed with $415.6M NASA funding while Vast, Orbital Assembly and others are making wholly independent efforts at creating private human habitats in space. (Image Credits: STS, SpaceX)

☆ Apr 24 — Hubble Space Telescope, LEO: Spacecraft with 2.4-meter diameter main telescope begins 34th year in space today, launched Apr 24, 1990; could continue operations until 2040s.

o Apr 24 — People’s Republic of China: National Day of Space Flight 2023; commemorating the launch of China’s first satellite, Dongfanghong-1 on April 24, 1970.

● Apr 24 — Ad Astra Kansas Day: Initiated in 2003 to promote public awareness of the importance of science & technology to Kansas’ growth; marked for Hubble Space Telescope launch, released by Kansas Astronaut Steve Hawley from Space Shuttle Discovery robotic arm the following day.

● Apr 24-25 — Lunar Surface Innovation Consortium (LSIC), Johns Hopkins Applied Physics Lab, Laurel MD: LSIC Spring Meeting 2023; featuring NASA Deputy Administrator Pam Melroy.

● Apr 24-27 — Cal Poly San Luis Obispo, San Luis Obispo CA: CubeSat Developers Workshop 2023: Building the Future of Space Together.

☆ Apr 24 — Moon: 3.6° N of M35 cluster, 14:00.

☆ Apr 24 — Amor Asteroid 2023 GU2: Near-Earth Flyby (0.049 AU)

Continued From…

Oct 15 – Jun 15, 2023 — International Space Elevator Consortium, Online: Space Elevator Academic Challenge: Improving Humanity’s Future; for students 17-25.

Jan 18 – May 11 — Wichita State University, Wichita KS and Online: 2023 Interstellar Seminar ‘LASI 150G’; 1-credit hour seminar begins today; every Wednesday 14:30-15:20, led by Prof. Mark Schneegurt.

o Feb 24 – May 24 — National Museum of China, Beijing, China: Exhibit Featuring China’s Human, Lunar and Space Program.

o Apr 22-27 — Deep Space Exploration Laboratory, University of Science and Technology of China, CNSA, Hefei, Anhui Province, China: 2023 International Conference of Deep Space Sciences; one of the activities conducted during 2023 Space Day of China.

o Apr 23-28 — EGU, Hybrid / Vienna, Austria and Online: European Geoscience Union General Assembly 2023.

TUESDAY

Apr 25 — International Space Station, Expedition 69 Russia EVA #57, ~415-km LEO: Sergey Prokopyev and Dmitri Petelin to transfer and install a heat-rejecting radiator and an experiment airlock to Nauka during ~6.5-hour spacewalk in Orlan spacesuits; live coverage available, starts 17:15 EDT.

☾ Apr 25 — Hakuto-R / ispace Mission 1, Lunar Landing: Carrying UAE Rashid 10-kg rover and 0.25-kg JAXA SORA-Q rover, Hakuto-R lander plans to touchdown on Moon nominally 16:40 UTC (06:40 HST); backup dates for landing are Apr 26, May 1 and May 3.

★ Apr 25 — SpaceX, Launch Falcon 9 / Starlink 3-5, SLC-4E, Vandenberg SFB CA: Falcon 9 rocket to launch next batch of Starlink communication satellites for SpaceX; first stage booster to land on drone ship in Pacific Ocean.

o Apr 25-26 — Chinese Society of Astronautics, Caelus Foundation, Secure World Foundation, Hefei, Anhui Province, China: Space High-end Dialogue Series 2023:  Perspectives on Lunar Commercialization: Value and Activities on the Moon for the Interest of Humanity.

● Apr 25-27 — Aerospace Corporation, Torrance CA: 2023 Space Power Workshop.

o Apr 25-28 — Space in Africa, Africa Union, Via Satellite, Room Space Journal, SatNav Africa, Airbus, DFH Satellite Co., et al, Abidjan, Côte d’Ivoire (Ivory Coast): NewSpace Africa Conference 2023: Space for Africa’s Socioeconomic Transformation.

☆ Apr 25 — Moon: 3.2° N of Mars, 18:00.

☆ Apr 25 — Apollo Asteroid 2023 GO1: Near-Earth Flyby (0.027 AU)

WEDNESDAY

Apr 26 — SpaceX, Launch Falcon Heavy / ViaSat 3 Americas, LC-39A, Kennedy Space Center FL: Falcon Heavy to launch ViaSat 3 Americas broadband communications satellite; two booster to land at Landing Zones 1 and 2; 07:24 EDT.

● Apr 26 — American Institute for Aeronautics and Astronautics (AIAA) Space Resources Technical Committee, Online / Washington DC: Presentation: Update on NASA ISRU Plans, Priorities, and Activities; with Gerald (Jerry) Sanders of JSC, 16:00 EDT.

☆ Apr 26 — Moon: 5.0° S of Castor, 03:00; 1.51° S of Pollux, 08:00.

☆ Apr 26 — Aten Asteroid 2006 HV5: Near-Earth Flyby (0.016 AU)

☆ Apr 26 — Apollo Asteroid 2023 GG1: Near-Earth Flyby (0.032 AU)

THURSDAY

☆ Apr 27 — Moon: At first quarter, 11:20; 4.0° NNE of Beehive Cluster, 13:00; at apogee (distance 404,311 km), 21:00.

FRIDAY

Apr 28 — International Space Station, Expedition 69 U.S. EVA #86, ~415-km LEO:  Two Astronauts to perform ~6.5-hour spacewalk in Extravehicular Mobility Unit spacesuits to prepare cables outside ISS for future ISS Rollout Solar Array installations and retrieve S-Band communications equipment; live coverage available, starts 07:45 EDT.

★ Apr 28 — SpaceX, Launch Falcon 9 / O3b mPOWER 3 & 4, SLC-40, Cape Canaveral SFS FL: Falcon 9 rocket to launch two O3b mPOWER broadband internet satellites to Medium Earth Orbit for SES of Luxembourg; first stage booster to land on drone ship in Atlantic Ocean.

● Apr 28 — Space Tourism Society, Los Angeles CA: Space Tourism Conference 2023: Expanding the Space Experience Economy.

o Apr 28 — International Astronautical Federation, Online / Global: Submission of Proposals Due for Hosting 77th IAC (2026) by IAF Member Organizations.

☆ Apr 28 — Apollo Asteroid 2021 JF2: Near-Earth Flyby (0.042 AU)

SATURDAY

☆ Apr 29  Tiangong Space Station (TSS), ~390-km LEO: Tianhe, first component of China TSS reaches 2 full years / enters 3rd year in Space, having launched on this day in 2021.

o Apr 29 — The Astronomical League, Global: Astronomy Day; astronomical societies, planetariums, museums, observatories sponsoring public viewing sessions, presentations, workshops.

☆ Apr 29 — Moon: 4.3° NNE of Regulus, 10:00.

SUNDAY

● Apr 30 — AIAA Space Systems Technical Committee (SSTC), Online / El Segundo CA: Due: National Middle School Essay Contest 2023; essay contest about James Webb Space Telescope.

☆ Apr 30 — Pluto: Stationary in longitude, starts retrograde motion, 18:00.

☆ Apr 30 — Apollo Asteroid 2023 GF2: Near-Earth Flyby (0.029 AU)

26 - 30 Jul 2026
  • Meeting / Conference / Symposium
Whistler, British Columbia, Canada
AAS hosts, and AIAA co-hosts, specifically AAS Space Flight Mechanics Committee and AIAA Astrodynamics Technical Committee. At Hilton Whistler Resort & Spa.
27 Jul 2026
  • Launch
SLC-4E (~35°N), Vandenberg SFB CA, USA
Another batch of 24 satellites for SpaceX's Starlink space-based Internet service.
27 - 28 Jul 2026
  • Meeting / Conference / Symposium
Exeter, United Kingdom
In celebration of the 25th anniversary of the creation of the Astrophysics Group at the University of Exeter, we are pleased to announce the international...
28 Jul 2026
  • Meeting / Conference / Symposium
Online
10:30 ET, Boeing to announce its 2nd quarter 2026 financial results.
29 Jul 2026
  • Space / Astro Events
Moon Orbit
14:37 UTC / 04:37 HST.
29 Jul 2026
  • Launch
Wenchang Space Launch Center, ~19°N, Hainan Island, China
Undisclosed payload on China's Long March 7A rocket from Hainan Island.
29 Jul 2026
  • Launch
Taiyuan Satellite Launch Center (TSLC), ~39°N, Shanxi, China
Unknown payload launching from Launch Complex 9A launch pad.
29 Jul 2026
  • Meeting / Conference / Symposium
Online
Set to launch August 30, this 2pm EDT briefing will feature NASA personnel Shawn Domagal-Goldman, Jackie Townsend, Julie McEnery, and Jeremy Perkins.
30 - 31 Jul 2026
  • Space / Astro Events
Worldwide
Emanating from ~6km-wide comet with 5.3-year Solar orbit, visible in constellation Aquarius near star Delta Aquarii, fast, faint meteors peak on this night, best...
30 - 31 Jul 2026
  • Meeting / Conference / Symposium
London, United Kingdom
The International Research Conference is a federated organization dedicated to bringing together a significant number of diverse scholarly events for presentation within the conference...
30 Jul 2026
  • Launch
SLC-40 (~28°N), Cape Canaveral SFS FL, USA
Launch window opens 03:09am EDT for classified payload to launch for the US National Reconnaissance Office.
31 Jul 2026
  • Meeting / Conference / Symposium
Venice, Italy
to be held December 2-4, 2026 in Venice, Italy. Interstellar space is not the domain of any one discipline. It demands insight from across the...
01 - 09 Aug 2026
  • Meeting / Conference / Symposium
Florence, Italy
Includes ~150 meetings covering the fields of COSPAR Scientific Commissions / Panels / Task Groups, such as SC B: The Earth-Moon System, Planets, and...
02 - 07 Aug 2026
  • Meeting / Conference / Symposium
Fukuoka, Japan
From 02 to 07 August 2026, a few thousand geoscientists across diverse disciplines will gather at the 23rd annual meeting of the Asia Oceania Geosciences...
03 Aug 2026
  • Meeting / Conference / Symposium
Online
Occurring at 12pm ET with NASA, the Canadian Space Agency (CSA), and SpaceX, followed by and 2PM ET briefings with the crew itself: 12...
04 Aug 2026
  • Meeting / Conference / Symposium
Online
Holding its first financial results telecon 4:30pm EDT, after going public on June 12, 2026.
05 Aug 2026
  • Observation / Anniversary
Mars Surface
NASA Curiosity (Mars Science Laboratory) rover surpasses another full year of operations on Mars surface today; launched Nov 26, 2011 – landed Aug 5,...
06 Aug 2026
  • Launch
Andøya Spaceport, ~63°N, Norway
2nd test flight of Isar Spectrum launch vehicle, to carry 5 cubesats to SSO, and ESA "Boost!" experiment: * CyBEEsat (TU Berlin) * TriSat-S...
07 Aug 2026
  • Launch
Tanegashima Space Center, ~30°N, Japan
Japan to launch 04:30 local time the MICHIBIKI No. 7 | Quasi-Zenith Satellite System (QZS-7) navigation satellite.
09 - 25 Aug 2026
  • Meeting / Conference / Symposium
Sun Moon Lake, Taiwan
This international lunar science meeting has two objectives: to provide a platform for leading experts to review recent advances across lunar research, from the...
10 Aug 2026
  • Meeting / Conference / Symposium
Online
2:00pm PDT - Rocket Lab Corporation (Nasdaq: RKLB) will release its financial results for the 2nd quarter 2026. A live webcast and replay of...
10 - 12 Aug 2026
  • Meeting / Conference / Symposium
Pretoria, South Africa
At CSIR International Convention Centre. Key topics are Earth Observation, Developing Space Tourism, Space Supply Manufacturing. Cultural tours are offered.
26 - 30 Jul 2026
Whistler, British Columbia, Canada
AAS hosts, and AIAA co-hosts, specifically AAS Space Flight Mechanics Committee and AIAA Astrodynamics Technical...
27 Jul 2026
SLC-4E (~35°N), Vandenberg SFB CA, USA
Another batch of 24 satellites for SpaceX's Starlink space-based Internet service.
27 - 28 Jul 2026
Exeter, United Kingdom
In celebration of the 25th anniversary of the creation of the Astrophysics Group at the University...
28 Jul 2026
Online
10:30 ET, Boeing to announce its 2nd quarter 2026 financial results.
29 Jul 2026
Moon Orbit
14:37 UTC / 04:37 HST.
29 Jul 2026
Wenchang Space Launch Center, ~19°N, Hainan Island, China
Undisclosed payload on China's Long March 7A rocket from Hainan Island.
29 Jul 2026
Taiyuan Satellite Launch Center (TSLC), ~39°N, Shanxi, China
Unknown payload launching from Launch Complex 9A launch pad.
29 Jul 2026
Online
Set to launch August 30, this 2pm EDT briefing will feature NASA personnel Shawn Domagal-Goldman,...
30 - 31 Jul 2026
Worldwide
Emanating from ~6km-wide comet with 5.3-year Solar orbit, visible in constellation Aquarius near star Delta...
30 - 31 Jul 2026
London, United Kingdom
The International Research Conference is a federated organization dedicated to bringing together a significant number...
30 Jul 2026
SLC-40 (~28°N), Cape Canaveral SFS FL, USA
Launch window opens 03:09am EDT for classified payload to launch for the US National Reconnaissance...
31 Jul 2026
Venice, Italy
to be held December 2-4, 2026 in Venice, Italy. Interstellar space is not the domain of...
01 - 09 Aug 2026
Florence, Italy
Includes ~150 meetings covering the fields of COSPAR Scientific Commissions / Panels / Task Groups,...
02 - 07 Aug 2026
Fukuoka, Japan
From 02 to 07 August 2026, a few thousand geoscientists across diverse disciplines will gather...
03 Aug 2026
Online
Occurring at 12pm ET with NASA, the Canadian Space Agency (CSA), and SpaceX, followed by...