https://www.theregister.com/2025/12/15/jaxa_innovative_satellite_technology_demonstration/

==

日本宇宙航空研究開發機構示範任務升空，一次測試 16 項前瞻太空技術_JAXA 近日成功發射「Innovative Satellite Technology Demonstration No.4」，透過一顆實驗型衛星與多顆 CubeSat，在實際軌道環境中同步測試 16 項前瞻太空技術，內容橫跨 AI 在軌應用、民用 GPU、低成本電力推進KIR-X，以及新型可展開結構（origami）
https://technews.tw/2025/12/15/raise-and-shine-for-jaxa/

小型實証衛星4號機 RAISE-4  : 本次任務的主要酬載為重約 110 公斤的 RAISE-4 衛星，共搭載 8 項實驗。
1. AIRIS ( Artificial Intelligence Retraining In Space (AIRIS)) 系統利用 AI 技術在軌偵測周邊物體，僅回傳必要資料以降低通訊負載，並可透過觀測結果持續學習與優化；
2. GEMINI (COTS GPU-based edge-computing for mission systems utilizing model-based systems engineering (GEMINI)) 則驗證以「民用級 GPU」執行高速訊號處理的可行性，並測試一套可快速進行軟體開發與更新的運算架構（此處的 GEMINI 只是實驗名稱，和 Google 的 Gemini AI 沒有關係）。

3. 在推進技術方面KIR-X 實驗嘗試以「水」作為衛星推進劑，期望簡化推進系統設計並降低成本；
4. TDS-PPT (Takahashi Denki Seisakusho Pulsed-Plasma Thruster (TDS-PPT)則測試小型脈衝電漿推進器，評估其在超小型與小型衛星上的應用潛力，鎖定低功耗、低成本的電力推進需求，回應近年小型衛星數量快速成長的市場趨勢。
5.  Low Earth orbit satellite MIMO for 920 MHz band IoT platform (LEOMI)
6.  Membrane deployment deorbit mechanism (D-SAIL) : D-SAIL is a deployable sail that uses its large surface area to generate friction with the atmosphere and decrease the orbital speed of the satellite, which allows it to lower altitude, ultimately leading to the satellite's deorbiting and entering Earth's atmosphere.[7] D-SAIL was developed by Axelspace Corporation
7. HELIOS-R
8.  CF-CAM
 
除主衛星外，本次任務也同步發射 8 顆 CubeSat，

Other CubeSats on the mission include:

 MAGNARO-II – Testing a new method for rotating and separating linked nanosatellites to form a constellation and demonstrate it in orbit;
 
 Mono-Nikko – An in-orbit demonstration of an intelligent power supply unit that can acquire status data of batteries installed in ultra-small spacecraft and quickly detect battery deterioration or abnormalities in orbit.

PRELUDE – A sat equipped with a small electric field/plasma hybrid sensor to detect precursor phenomena and to perform global earthquake predictions.
 
其中  OrigamiSat-2 成為亮點之一。該 3U CubeSat 搭載一套以「摺紙（origami）」概念設計的可展開陣列天線，天線元件附著於雙層薄膜結構上，可在收納時壓縮為約 10 公分立方體，進入軌道後展開。展開大小約為原來的 25 倍，用來提升通訊效率。值得注意的是，OrigamiSat-2 採用的摺紙技術，與過去部分研究著重於「緩衝衝擊或降落減震」的應用方向不同，本次重點放在 太空結構的高密度收納與可靠展開，目標解決 CubeSat 體積受限、卻仍需大型天線或結構元件的設計瓶頸。

另一顆 CubeSat「WASEDA-SAT-ZERO-II」則由早稻田大學團隊開發，採用 3D 列印製作衛星外殼，設計上不使用螺絲與傳統機械零件，期望在結構分離與部署過程中降低產生太空碎片的風險，呼應近年太空產業對軌道永續與碎片管理的關注。

JAXA 表示，本次任務預計先進行約 2 個月的系統準備，後續展開為期 13 個月的在軌驗證作業。未來的第五號示範任務，將聚焦消費級電子元件在太空環境中的可靠性，以及具備推進能力、可進行在軌維護的 CubeSat；同時，相關計畫也將轉型為「太空技術示範加速計畫（JAXA-STEPS）」，以進一步加快新技術導入商業太空市場的速度。

==

https://aigc.cmoney.tw/answer/raise4-2-7440088
==

https://www.wikiwand.com/en/articles/RAISE-4

The satellite carries eight of the 16 themes that will be tested in Innovative Satellite Technology Demonstration-4. Among them, five are reflights from RAISE-3, one (KIR-X) has its design modified from RAISE-3, and two (CF-CAM and AIRIS) were newly selected to be flown on RAISE-4.

https://www.cnbeta.com.tw/articles/science/1541076.htm#google_vignette 

在最后的火箭一子级在着陆段点火后出现异常，未实现在回收场坪的软着陆，残骸着陆于回收场坪边缘，回收试验失败。

朱雀三号任务总指挥戴政复盘：“从距离地面40公里一直到最后3公里，表现非常完美。在3公里的时候，要做一次着陆点火，类似于急刹车，让高度为0的时候速度也降为0。但是最后那一脚刹车没踩好，火箭摔下来了，离‘圆满’只差40米的距离。不过朱雀三号已经完成了最具挑战的难题，也就是“超音速再入气动滑行阶段”。

帕克探測器揭密日冕邊界，發現太陽物質竟會「倒流」  https://technews.tw/2025/12/15/a-nasa-spacecraft-is-piercing-the-suns-scorching-atmosphere-right-now/

MORE

https://familystar.org.tw/index.php?option=com_smf&Itemid=38&topic=38895.0

https://familystar.org.tw/index.php?option=com_smf&Itemid=4&topic=39712.new



https://www.cloudynights.com/forums/topic/958892-difference-between-askar-sqa-phq-fra-apo/

SQA Series SQA55 SQA70 SQA85 SQA106

 

PHQ Series 65PHQ 80PHQ 107PHQ 130PHQ 151PHQ

 

FRA Series FRA300pro FRA400 FRA500 FRA600

 

APO Series 103APO 120APO 140APO 160APO 185APO 203APO

 

FMA Series FMA135 FMA180pro FMA180 FMA230

 SQA.  Like Takahashi but cheaper and most likely no "lighthouse" aberrations.  Pricey for the aperture.  But apparently good.  According to YouTube they are the new Redcats...  Probably the best do it all.  But price to FL ratio and aperture is the lowest while quality is the highest.  But long focal lengths is not so much what they do.   

 

- PHQ.  Slower focal ratio, so easier to get well controlled stars.  Bonus points as they come in red and white with ZWO on the side.  It sold me!  Probably the best with longer integration/dark skies/price, trading speed for star shapes if you can accept the trade offs. 

 

- FRA.  Fast(er) and with options (some).  The 500 with a reducer is seriously fast.  But probably worse stars than a PHQ.  But speed is speed.  And Blur Exterminator works.  Best under polluted skies perhaps.

 

-APO.  Standard triplets, so unlike the above 3 "petzval, quad, quintuplets" means dealing with back focus.  Not a big deal if it works out and you aren't bothered by that.  The really big ones are probably to be avoided.  The 103 and 120 are said to be amazing for the price.  But you will be dealing with back focus.  And lurid orange. 

 

- FMA.  Ultra wide. Good and bad.  More like camera lenses but trading better stars for focal ratio (speed). 

 

In seriousness, I have to hand it to Askar.  In a few years they have come up with options for everyone.



SharpStar HNT - Very fast hyperbolic newtonian reflectors

SharpStar EDPH - Fast (reduced to faster than f/5), full frame traditional refractors.

Askar PHQ - Slower Petzval refractors, full frame

Askar FRA - Fast Petzval refractors, full frame

Askar FMA - Fast wide field petzval refractors, APS-C and lens format design

Askar APO - Very traditional triplet refactors. Full frame, requires a flattener/reducer and backspacing. Some very large designs available at a budget price

Askar V - Flexible modular refractor

Askar F - Budget friendly triplet petzval

SharpStar Z - A fast APS-C Petzval that makes no sense in the line up at all

Asteroid Photobomb! Space Rocks Invade Hubble Galaxy View

"This parallax effect is somewhat similar to the effect you see from a moving car, in which trees by the side of the road appear to be passing by much more rapidly than background objects at much larger distances," STScI officials explained in the same statement. "The motion of Earth around the sun, and the motion of the asteroids along their orbits, are other contributing factors to the apparent skewing of asteroid paths."

Each asteroid was found manually by "blinking" images (quickly moving between different images of the same field of view) to look for asteroid motion. The arcs of the asteroid motions are distinct from separate arcs of blue light, which represent distorted images of galaxies that are behind the cluster. (The light from these galaxies is bent by dark matter, scientists said.)

https://www.space.com/38655-asteroids-photobomb-galaxy-cluster-hubble-telescope-views.html?fbclid=IwY2xjawOsVylleHRuA2FlbQIxMABicmlkETFObmlLbG96bUxiRHg2Qlk1c3J0YwZhcHBfaWQQMjIyMDM5MTc4ODIwMDg5MgABHrhvP2vNRfFRNyLohwHDm45U3b6NYVB8lMJxAIwfdQpimI-c8mxh6l2hjT4A_aem_l54QHk6Mn-pgTiDkrxxCDw  


https://www.facebook.com/photo/?fbid=1280112084148679&set=a.298317502328147

https://illuminateduniverse.org/2024/04/19/asteroids-photobomb-the-universe/ 

Asteroids Photobomb the Universe

公民科學家和人工智慧利用哈伯發現隱藏的小行星

https://tam.gov.taipei/News_Content.aspx?n=EF86D8AF23B9A85B&sms=F32C4FF0AC5C2801&s=8FDE4500877FDA54

但卻充斥在恆星和星系的背景上。共19年37,000張哈伯影像，透過公民科學志工和人工智慧演算法來完成，發現1,701條以前未被發現的小行星蹤跡。圖片來源：Pablo García Martín (UAM)、Elizabeth Wheatley (STScI)


研究人員表示看到如此多的候選小行星感到驚訝，而這些跡象表示這個族群存在，現在正透過使用哈伯檔案獲得的隨機小行星族群樣本來證實這一點，這對於深入了解太陽系的演化模型非常重要，並且為小行星帶的形成和演化提供了新的見解。這些較小的小行星可能是過去碰撞中大型小行星的碎片，或者當它們在數十億年前形成時，沒有任何機制使它們可以如同滾雪球般逐漸增大。

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一起讓學習，成為每天期待的事！
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https://www.cnbeta.com.tw/articles/science/1540648.htm

Maven于2013年发射，2014年9月进入火星轨道后，开始研究火星上层大气及其与太阳风的相互作用。

通过Maven航天器采集到的数据，科学家们认为，火星大部分大气层流失的原因在于太阳，也正因此导致火星从潮湿温暖变成如今干燥寒冷的世界。

此外，Maven还曾担任NASA两台火星探测器Curiosity和Perseverance的通信中继。NASA表示，恢复与Manen联系的工作正在进行中。

据悉，除了失联的Maven外，NASA现在还有另外两艘仍在运行的火星航天器，分别是2005年发射的火星侦查轨道器和2001年发射的火星奥德赛号。