April 27 - May 3, 2026 | Vol 45, Week 17 | Hawai`i Island, USA

Amazon Leo Has a Quota to Fill

Two launches, April 27 / 28, are planned for the same Amazon Leo project for global internet, but using different launch providers and vehicles. United Launch Alliance (ULA) will send 29 satellites via an Atlas V from Cape Canaveral Space Force Station, and Arianespace will deploy 32 satellites using Ariane 64 from Guiana Space Centre. These are the 10th and 11th launches for Amazon Leo. If a pattern is kept, they will be released at altitude 465 km about 2 hours after launch, after which they will be tested then boosted to 630 km.  After recent approval for an additional 4,500 satellites, Amazon LEO will consist of ~7,736 satellites across 98 orbital planes at altitudes of 590 km, 610 km and 630 km. Starlink currently has 10,000+ satellites in 150+ orbital planes at altitudes 340 km, 480 km and 550 km. Unlike Starlink, Amazon relies on multiple external launch providers. Amazon is merging with Globalstar and partnering with Apple for spectrum access and direct-to-device services. In meeting an FCC date to have 1,600+ in orbit, Amazon is working with ULA and Arianespace to increase satellites-per-launch and has contracted to use New Glenn for launches. Amazon Leo was renamed from Project Kuiper. The ULA launch will be livestreamed. (Image Credits: Amazon, ESA-CNSA-Arianespace-ArianeGroup-Optique Vidéo du CSG, ULA)

APRIM Advancing IAU Astronomy

 

Lead in Hong Kong is Dr Quentin Parker and he partnered with ILOA, allowing for the ILO-C to be developed by BISME. (Image Credits: )

Humans in Space

☆ International Space Station, ~415-km LEO: Expedition 74 seven members expecting resupply ship Progress MS-34 (95P) to arrive with ~7,280 kg of cargo. …

☆ Tiangong Space Station, ~390-km LEO: Shenzhou-21 three-member crew will have their stay extended by one month to late May due to Shenzhou-21 use after Shenzhou-20 suffered damage; Shenzhou-22 will be used by the current crew. Zhang Lu and Wu Fei installed more components of the external debris protection equipment on a spacewalk. This 7th EVA by Zhang Lu is the most by a Taikonaut.

◐ Lunar Enterprise News: Blue Origin re-flew a New Glenn 1st stage and again recovered it, 2nd stage 1-min+ burn failed; New Glenn to launch Blue Moon lander NLT September. New NASA Moon base program manager Carlos Garcia-Galan spoke at Space Symposium about “100s of square miles” as base size. Benchmark Space Systems will work on Lunar Assay via Small Satellite Orbiter (LASSO). Latvia became 62nd signer of Artemis Accords. Charania and Crouse presented at LPSC2026 on lunar nuclear-power using Americium-241. ispace and Shimizu sign MOU to plan cislunar architecture and lunar surface data center. Agreement with NASA has Italian Space Agency developing Moon base components. Astrobotic partnering with Thales on rover wheels. Artemis II purpose called out: A test mission, not a science mission. 

 Near-Earth Objects Close Approaches Mon Apr 27: Apollo Asteroid 2026 HR (0.042 AU); Tue Apr 28: Amor Asteroid 2026 GU1 (0.031 AU); Tue Apr 28: Apollo Asteroid 2026 HW (0.024 AU); Sun May 3: Amor Asteroid 2026 GD1 (0.037 AU)

First Woman Lands on the Moon …

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  • Tuesday

    Monday

    — United Launch Alliance (ULA),
    SLC-41 (~28°N), Cape Canaveral SFS FL, USA
    Launch window 20:52-21:21 EDT | 14:52-15:21 HST | UTC April 28 00:52-01:21, for 29 satellites to Low Earth Orbit for Amazon Leo internet system. Constellation planned to...
    — ISS Partners (NASA, Roscosmos, JAXA, ESA and CSA-ASC),
    Low Earth Orbit (LEO)
    Expected 2 days after launch from Kazakhstan, arriving ~22:21 UTC with ~7,280 kg of cargo.
    — SpaceX,
    SLC-39A, ~29°N, Kennedy Space Center FL, USA
    Launch window 10:21-11:46 EDT | 04:21-05:46 HST | 14:21-15:46 UTC for first Falcon Heavy launch since 2024, sending to Geostationary Transfer Orbit 3 Ka-band satellites offering 1-terabit-per-second...
    — Sophia Centre for the Study of Cosmology in Culture, University of Wales Trinity Saint David, Yildiz Technical University,
    Istanbul, Türkiye
    Planned topics include star and constellation myth and imagery; modern and ancient astronomy of China, India, Central Asia, West Asia, North Africa, the Eastern Mediterranean and Europe.
    — American Nuclear Society (ANS),
    Dayton OH, USA
    Speakers include Bhavya Lal and Clive Neal, to bring together visionary engineers building the hardware, policymakers writing the standards, and agency leaders deploying the capital. When NASA,...

    Tuesday

    — Arianespace,
    Launch Area 4, ~5°N, Guiana Space Centre, French Guiana
    Launch window 05:51-06:39 French Guiana Time | 08:51-09:39 UTC | HST April 17 22:51-23:39, to carry 32 satellites to Low Earth Orbit for broadband internet, part of...
    — World Innovation Network, Space Rising,
    Phoenix AZ, USA
    Space Tank hope to ignite innovation in space by having entrepreneurs / inventors / designers / engineers describe their start-up business, for the purpose of receiving support...
    $125
    — Lunar Surface Innovation Consortium (LSIC), Johns Hopkins University Applied Physics Lab (JHU-APL),
    Online / Washington DC, USA
    Theme Accelerate the Pace: Touch Down, Power Up, and Explore! focuses on urgency for lunar infrastructure technology efforts, inviting discussions on how we can accelerate progress together....
    Free – US$220
    — American Institute of Aeronautics and Astronautics (AIAA), Johns Hopkins University,
    Online
    Online short course on Rendezvous and Proximity Operations (RPO), critical for crew transfer, in-space assembly and space debris removal, among other uses. Instructor is Pradipto Ghosh; 12...
    US$1595 – US$1795

    Wednesday

    — Spaceport Norway,
    Oslo, Norway
    Arnt-Børre Salberg is the guest at 17:00-20:00, Mesh Youngstorget, Møllergata 6, Oslo. He and his team have built THOR since he gave a talk on artificial intelligence...
    — National Aeronautics and Space Administration (NASA),
    Online
    "Learning from Experiences, Achievements, and Resolution Navigation" -- Representatives from multiple NASA centers and outside organizations meet to advance NASA goals via networking, information exchange, and collaborative...
    — SpaceX,
    SLC-4E (~35°N), Vandenberg SFB CA, USA
    Launch window 04:00-08:00 PDT | 01:00-05:00 HST for 25 internet satellites to LEO. First stage booster B1071 expected to land on ASDS barge OCISLY in the Pacific...

    Thursday

    — American Institute of Aeronautics and Astronautics (AIAA), American Institute of Aeronautics and Astronautics (AIAA) Los Angeles Section,
    Online
    Co-Hosted by The AIAA Gravity Dependent Science and Technology Technical Committee (GDST-TC), formerly the Microgravity Space Processes Technical Committee (MSP-TC). Natasha Tsakos shares the story of Space Wonders:...
  • Friday

    — SpaceX,
    Starbase, 25.9°N, Boca Chica TX, USA
    12th flight overall of the two-stage Starship vehicle, but first of bigger / more-powerful Version 3 / V3, with higher thrust for both the Super Heavy booster...
    — International Space Day,
    Worldwide
    First Friday in May, events and presentations to promote STEM education and inspire people to continue the work of Space explorers; originally began as ‘National Space Day’...
    — Full Moon,
    Moon Orbit
    17:24 UTC (07:24 HST).

    Saturday

    — Maunakea Observatories (MKO), University of Hawai'i Institute for Astronomy,
    Hilo HI, USA
    Family-friendly free event, 10:00-16:00 HST at Prince Kūhiō Plaza shopping center, to educate and entertain about astronomy and space, with >30 organizations hoping to inspire next-generation science...

    Sunday

    — United States Geospatial Intelligence Foundation (USGIF),
    Aurora CO, USA
    Includes sessions on The Space Economy, SATCOM, Fusing Space / Air / Surface Sensing. Expecting 4,000+ attendees. Special attention to students and young professionals. At Gaylord Rockies...
    — International Astronomical Union (IAU), International Academy of Astronautics (IAA), United Nations Office of Outer Space Affairs (UNOOSA),
    Hong Kong, China
    More than 570 abstracts were received, 14 plenary and 51 invited speakers span 9 themes, and 58 early career astrophysicists have received travel grants for this Asia...
    — European Geosciences Union,
    Vienna, Austria
    Includes Lunar Session for discussion of the latest advancement in lunar science, exploration and sustainable utilization, including the deep interior, subsurface structure, surface morphology, up to atmospheric...
    Free – €765