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The Downlink Volume 3, Issue 4
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The Downlink | The WikiProject Spaceflight Newsletter |
|---|---|---|
| 2025 1 — 30 April |
| Volume 3 — Issue 4 | |
|---|---|
| Spaceflight Project • Project discussion • Members • Assessment • Open tasks • Popular pages • The Downlink | |
In the News
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| Article of the month
The Apollo Abort Guidance System (AGS, also known as Abort Guidance Section) was a backup computer system providing an abort capability in the event of failure of the Lunar Module's primary guidance system (Apollo PGNCS) during descent, ascent or rendezvous. As an abort system, it did not support guidance for a lunar landing. The AGS was designed by TRW independently of the development of the Apollo Guidance Computer and PGNCS. It was the first navigation system to use a strapdown Inertial Measurement Unit rather than a gimbaled gyrostabilized IMU (as used by PGNCS). Although not as accurate as the gimbaled IMU, it provided satisfactory accuracy with the help of the optical telescope and rendezvous radar. It was also lighter and smaller in size. |
Image of the month
Falcon 9 Full Thrust
 Starting development in 2014, the Falcon 9 Full Thrust is a variant of the Falcon 9 that is the first orbital rocket to have a first stage successfully land vertically after launch. The stage shown here is from the April 2016 SpaceX CRS-8 mission, after landing on the autonomous spaceport drone ship Of Course I Still Love You. |
| Members
New Members:
Number of active members: 208.
Total number of members: 433.
April Launches
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Article Statistics This data reflects values from 30 April 2025. Monthly Changes
Since March 2025, four new high-importance, two new mid-importance, twenty new low-importance, and two new NA-importance articles have been created. Four unknown-importance articles have been removed, for a total of 24 new articles. One article has been promoted to Featured Article status. There are also five more B-class articles, eighteen more C-class articles, eleven more Start-class articles, six fewer Stub-class articles, and six more lists. Special thanks to Neopeius for significantly working on some of the Timeline of spaceflight articles (specifically 1953, 54, 55, and most recently 56). Thanks also to Sotakarhu for table work in the latter. |
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Discuss & propose changes to The Downlink at The Downlink talk page. To unsubscribe from the newsletter remove your name from the Mailing list. | |
MediaWiki message delivery (talk) 04:26, 19 May 2025 (UTC)
The Downlink Volume 3, Issue 5
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The Downlink | The WikiProject Spaceflight Newsletter |
|---|---|---|
| 2025 1 — 31 May |
| Volume 3 — Issue 5 | |
|---|---|
| Spaceflight Project • Project discussion • Members • Assessment • Open tasks • Popular pages • The Downlink | |
In the News
| |
Article of the month
 2001 Mars Odyssey is a robotic spacecraft orbiting the planet Mars. The project was developed by NASA, and contracted out to Lockheed Martin, with an expected cost for the entire mission of US$297 million. Its mission is to use spectrometers and a thermal imager to detect evidence of past or present water and ice, as well as study the planet's geology and radiation environment. The data Odyssey obtains is intended to help answer the question of whether life once existed on Mars and create a risk-assessment of the radiation that future astronauts on Mars might experience. It also acts as a relay for communications between the Curiosity rover, and previously the Mars Exploration Rovers and Phoenix lander, to Earth. The mission was named as a tribute to Arthur C. Clarke, evoking the name of his and Stanley Kubrick's 1968 film 2001: A Space Odyssey. Odyssey was launched April 7, 2001, on a Delta II rocket from Cape Canaveral Air Force Station, and reached Mars orbit on October 24, 2001, at 02:30 UTC (October 23, 19:30 PDT, 22:30 EDT). As of March 2025, it is still collecting data, and is estimated to have enough propellant to function until the end of 2025. It currently holds the record for the longest-surviving continually active spacecraft in orbit around a planet other than Earth, ahead of the Pioneer Venus Orbiter (served 14 years) and the Mars Express (serving over 20 years), at 23 years, 7 months and 27 days. As of October 2019 it is in a polar orbit around Mars with a semi-major axis of about 3,800 km or 2,400 miles. |
Image of the month
International Space Station after LF1
 Starting with Zarya in November 1998, the assembly of the International Space Station continued on a regular basis until the Space Shuttle Columbia disaster, which resulted in a nearly three-year pause from November 2002 to July 2005. This image shows the ISS following the installation of the second External stowage platform. ESP-2 was launched on 26 July 2005 on board Discovery as part of STS-114. |
| Members
New Members:
Number of active members: 209.
Total number of members: 434.
May Launches
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Article Statistics This data reflects values from 30 May 2025. Monthly Changes
Since April 2025, three new mid-importance, nine new low-importance, and three new unknown-importance articles have been created, for a total of 15 new articles. There is also one less B-class article, 14 more C-class articles, six more Start-class articles, four less Stub-class articles, and three more lists. |
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Discuss & propose changes to The Downlink at The Downlink talk page. To unsubscribe from the newsletter remove your name from the Mailing list. | |