• Friday

    Friday

    — National Aeronautics and Space Administration (NASA),
    Jupiter Orbit
    NASA craft to perform Jupiter flyby during Perijove 75, its 75th close flyby of Jupiter and 74th science flyby with instruments turned on.
  • Monday

    Wednesday

    — National Aeronautics and Space Administration (NASA),
    Jupiter Orbit
    NASA craft to perform Jupiter flyby during Perijove 76, its 76th close flyby of Jupiter and 75th science flyby with instruments turned on – to be last...

    Monday

    — Sun-Earth,
    Worldwide
    The Sun rises exactly in east traveling through sky for 12 hours, sets exactly in west; every place on Earth experiences a ~12-hour day, 18:19 UTC (08:19...

    Thursday

    — Astronaut Scholarship Foundation (ASF),
    Online
    Astronaut Scholarship Foundation presents a Live Chat with veteran NASA Astronaut Leland Melvin on Thursday, September 25th at 1:00 PM ET for students in 3rd-12th grades and...
    Free
  • Wednesday

    — American Institute of Aeronautics and Astronautics (AIAA),
    Mountain View CA, USA
    All ages welcome! Come and join your colleagues and friends in the aerospace profession in a relaxed atmosphere. Network over a pitcher of beer and schnitzel. AIAA-SF will...

    Wednesday

    — Comet 21P / Giacobini-Zinner,
    Worldwide
    Appearing when Earth passes through the tail of Comet 21P / Giacobini-Zinner, the comet was a perihelion in 2025; speculation has arisen this may be a year...

    Monday

    — Halley’s Comet,
    Worldwide
    One of 2 showers yearly from Halley’s Comet dust, one dust cloud from Halley's path toward the Sun, and one from its path away. Orionids appear to...
  • Sunday

    Tuesday

    — Comet Encke (2P),
    Worldwide
    Known for fireballs in a swarm year such as 2025, they will have to compete with a Full Moon Nov 5. Appearing in the Constellation Taurus, they...

    Monday

    — Astronaut Scholarship Foundation (ASF),
    Online
    Online auction to raise scholarship funds, of items such as NASA Astronaut mementos. 99% / 4-star rating from Charity Navigator for Astronaut Scholarship Foundation.

    Tuesday

    — Comet Encke (2P),
    Worldwide
    From Comet Encke dust cloud, with peak rate 5 per hour. Moon is 53% full.

    Sunday

    — Comet Tempel-Tuttle (55P),
    Worldwide
    From Comet Tempel-Tuttle (55P) dust cloud, peak rate 15 per hour. Moon is 9% full.

    Saturday

    Mars Surface
    The northern hemisphere's autumn equinox on Mars marks the beginning of the autumn season in the northern hemisphere and coincides with the start of the planet's dust...
    — National Aeronautics and Space Administration (NASA),
    Low Earth Orbit (LEO)
    Appearing at brightest magnitude 0.9, traveling from SW to E, Hubble Space Telescope will appear over Hawaiian Islands from 18:56:02 to 19:03:04 HST.
  • Tuesday

    — ISS Partners (NASA, Roscosmos, JAXA, ESA and CSA-ASC),
    Low Earth Orbit (LEO)
    ISS Expedition 73 members Sergey Ryzhikov, Alexey Zubritsky and Jonny Kim planned to return to Earth today in Roscosmos Soyuz MS-27 craft, landing in Kazakhstan.

    Saturday

    — Asteroid 3200 Phaethon,
    Worldwide
    Usually strongest meteor shower yearly, up to 150 hourly. Moon is 30% full.

    Sunday

    — Sun-Earth,
    Low Earth Orbit (LEO)
    Occurs 05:01 HST, 15:01 UTC; It is the winter solstice in the Northern Hemisphere, resulting in the shortest day and longest night of the year; and conversely,...

    Monday

    — Comet 8P/Tuttle,
    Low Earth Orbit (LEO)
    From Comet Tuttle (8P), with up to 10 per hour. Moon only 3% full helps viewing on peak nights; active Dec 17-26.

    Tuesday

    — National Aeronautics and Space Administration (NASA),
    Low Earth Orbit (LEO)
    At magnitude 2.9, the Hubble Space Telescope will travel over Hawaiian Islands from SSE to E, rising at 04:58:50 to 05:04:49 HST.
  • Thursday

    Jupiter System
    NASA Juno indicates Europa ice may be 6x deeper than thickest Antarctic ice; timing of craft planned plunge into Jupiter clouds TBD | ESA JUICE heading toward...

    Friday

    — Asteroid 2003 EH,
    Worldwide
    The Quadrantid shower is known for its brief, intense peak, lasting only a few hours. Appearing to radiate from Constellation Quadrans Muralis, there can be 25-120 meteors...

    Saturday

    Saturday

    — ISS Partners (NASA, Roscosmos, JAXA, ESA and CSA-ASC),
    Low Earth Orbit (LEO)
    Visible at -3.9 magnitude, the International Space Station will travel over Hawaiian Islands from NW to SE, rising at 04:48:07 to 04:54:02 HST.

    Sunday

    — China National Space Administration (CNSA),
    Low Earth Orbit (LEO)
    Beginning 06:20:51 HST from the SSW, Tiangong will make a visible pass at brightest magnitude 1.2 over Hawaiian Islands, setting 06:29:49 in the ENE.

    Thursday

    — National Aeronautics and Space Administration (NASA),
    Low Earth Orbit (LEO)
    To be confirmed after postponement of Spacewalk #95; would begin 05:40 EST, lasting ~6.5 hours.