Dwayne Day
@kennen11.bsky.social
Historian of military and civil space programs and policy. In my day job I direct studies for NASA on space and aeronautics subjects including planetary science, astrophysics, and Earth science. Work at the National Academy of Science. Trekkie. Dogs.
My next article in The Space Review will be about this. Appearing this evening.
November 10, 2025 at 3:45 PM
My next article in The Space Review will be about this. Appearing this evening.
Reposted by Dwayne Day
What happens when terrorists seize control of a skyscraper?
Or a plane?
Or a battleship?
Or a mall?
Or a bus?
Or a sports arena?
Or another skyscraper?
Find out this holiday season in our new series:
GET ME ANOTHER… DIE HARD.
Starts Tuesday, November 11th wherever you listen to podcasts.
Or a plane?
Or a battleship?
Or a mall?
Or a bus?
Or a sports arena?
Or another skyscraper?
Find out this holiday season in our new series:
GET ME ANOTHER… DIE HARD.
Starts Tuesday, November 11th wherever you listen to podcasts.
November 6, 2025 at 6:18 PM
What happens when terrorists seize control of a skyscraper?
Or a plane?
Or a battleship?
Or a mall?
Or a bus?
Or a sports arena?
Or another skyscraper?
Find out this holiday season in our new series:
GET ME ANOTHER… DIE HARD.
Starts Tuesday, November 11th wherever you listen to podcasts.
Or a plane?
Or a battleship?
Or a mall?
Or a bus?
Or a sports arena?
Or another skyscraper?
Find out this holiday season in our new series:
GET ME ANOTHER… DIE HARD.
Starts Tuesday, November 11th wherever you listen to podcasts.
Reposted by Dwayne Day
Rep. Yassamin Ansari has set up a table and this sign outside Speaker Johnson’s office.
November 6, 2025 at 6:22 PM
Rep. Yassamin Ansari has set up a table and this sign outside Speaker Johnson’s office.
My new article is up:
thespacereview.com/article/5093/1
thespacereview.com/article/5093/1
November 4, 2025 at 12:01 PM
My new article is up:
thespacereview.com/article/5093/1
thespacereview.com/article/5093/1
Reposted by Dwayne Day
Stormzy was down but he wasn't out.
He has a lot of training, rest and medicines to go but if this doesn't put a huge smile on your face nothing will!!
He has a lot of training, rest and medicines to go but if this doesn't put a huge smile on your face nothing will!!
November 3, 2025 at 1:48 PM
Stormzy was down but he wasn't out.
He has a lot of training, rest and medicines to go but if this doesn't put a huge smile on your face nothing will!!
He has a lot of training, rest and medicines to go but if this doesn't put a huge smile on your face nothing will!!
My next article will appear in The Space Review Monday evening. It deals with efforts to provide a near-real-time reconnaissance capability to the HEXAGON satellite. There was a 1970 proposal to add a system to the existing reconnaissance cameras. (more)
November 3, 2025 at 1:40 PM
My next article will appear in The Space Review Monday evening. It deals with efforts to provide a near-real-time reconnaissance capability to the HEXAGON satellite. There was a 1970 proposal to add a system to the existing reconnaissance cameras. (more)
Reposted by Dwayne Day
Holy shit look at this
Comet C/2025 A6 (Lemmon), photographed by Chuck Ayoub on 30 October 2025.
The comet made its closest approach to Earth (90 million km) on October 2025.
Source: Chuck's Astrophotography (@chucksastropho1 on Twitter), h/t @p-s-v.bsky.social
Comet C/2025 A6 (Lemmon), photographed by Chuck Ayoub on 30 October 2025.
The comet made its closest approach to Earth (90 million km) on October 2025.
Source: Chuck's Astrophotography (@chucksastropho1 on Twitter), h/t @p-s-v.bsky.social
November 1, 2025 at 8:57 PM
Holy shit look at this
Comet C/2025 A6 (Lemmon), photographed by Chuck Ayoub on 30 October 2025.
The comet made its closest approach to Earth (90 million km) on October 2025.
Source: Chuck's Astrophotography (@chucksastropho1 on Twitter), h/t @p-s-v.bsky.social
Comet C/2025 A6 (Lemmon), photographed by Chuck Ayoub on 30 October 2025.
The comet made its closest approach to Earth (90 million km) on October 2025.
Source: Chuck's Astrophotography (@chucksastropho1 on Twitter), h/t @p-s-v.bsky.social
Reposted by Dwayne Day
Heartbroken to hear about the passing of our dear friend, the great RALPH SENENSKY as he boldly goes into the final frontier of the undiscovered country. He will truly be missed.
www.hollywoodreporter.com/tv/tv-news/r...
www.hollywoodreporter.com/tv/tv-news/r...
Ralph Senensky, Director on ‘Star Trek’ and ‘The Waltons,’ Dies at 102
He helmed memorable episodes spotlighting Leonard Nimoy and Ellen Corby on those shows, plus the three-part pilot for 'Dynasty.'
www.hollywoodreporter.com
November 1, 2025 at 8:21 PM
Heartbroken to hear about the passing of our dear friend, the great RALPH SENENSKY as he boldly goes into the final frontier of the undiscovered country. He will truly be missed.
www.hollywoodreporter.com/tv/tv-news/r...
www.hollywoodreporter.com/tv/tv-news/r...
My next article will appear in The Space Review on Monday evening. It has these things in common:
November 1, 2025 at 1:37 PM
My next article will appear in The Space Review on Monday evening. It has these things in common:
My other article is up: thespacereview.com/article/5087/1
October 28, 2025 at 4:08 PM
My other article is up: thespacereview.com/article/5087/1
My new article (1 of 2) is up:
www.thespacereview.com/article/5089/1
www.thespacereview.com/article/5089/1
October 28, 2025 at 4:33 AM
My new article (1 of 2) is up:
www.thespacereview.com/article/5089/1
www.thespacereview.com/article/5089/1
I will have two articles in next week's Space Review. One of them will be about a top secret 1963 camera experiment to photograph a suspected anti-ballistic missile site near Leningrad.
October 24, 2025 at 4:14 PM
I will have two articles in next week's Space Review. One of them will be about a top secret 1963 camera experiment to photograph a suspected anti-ballistic missile site near Leningrad.
Reposted by Dwayne Day
Ernst Stuhlinger's "Cosmic Butterfly" Ion engine spacecraft concept. Model by @nick-stevens.com #Lightwave3D
October 23, 2025 at 10:03 PM
Ernst Stuhlinger's "Cosmic Butterfly" Ion engine spacecraft concept. Model by @nick-stevens.com #Lightwave3D
Reposted by Dwayne Day
Via ABC news,
Planet imagery showing the change in the view from space of the White House over the past month
Planet imagery showing the change in the view from space of the White House over the past month
October 24, 2025 at 1:42 AM
Via ABC news,
Planet imagery showing the change in the view from space of the White House over the past month
Planet imagery showing the change in the view from space of the White House over the past month
Reposted by Dwayne Day
“Russia is protecting its nuclear submarines in the Arctic with an undersea surveillance system built using high-tech equipment acquired from U.S. & European companies through a secret procurement network, according to newly uncovered financial records, court documents & Western security officials.”
Russia acquired Western technology to protect its nuclear submarine fleet
Russia secretly used front companies to buy Western technology and erect a surveillance net in the Arctic where its submarines operate, an investigation shows.
www.washingtonpost.com
October 23, 2025 at 5:34 PM
“Russia is protecting its nuclear submarines in the Arctic with an undersea surveillance system built using high-tech equipment acquired from U.S. & European companies through a secret procurement network, according to newly uncovered financial records, court documents & Western security officials.”
Reposted by Dwayne Day
This article is another great example of using CIA Photographic Intelligence Reports (PIRs) to filter through the millions of CORONA, GAMBIT, and HEXAGON scenes and find something notable (in this case, R-16 ICBMs).
thespacereview.com/article/5082/1
thespacereview.com/article/5082/1
October 21, 2025 at 11:51 PM
This article is another great example of using CIA Photographic Intelligence Reports (PIRs) to filter through the millions of CORONA, GAMBIT, and HEXAGON scenes and find something notable (in this case, R-16 ICBMs).
thespacereview.com/article/5082/1
thespacereview.com/article/5082/1
I have two articles in The Space Review this week. Here is one of them. thespacereview.com/article/5085/1
October 21, 2025 at 8:35 PM
I have two articles in The Space Review this week. Here is one of them. thespacereview.com/article/5085/1
My new article with Harry is up:
thespacereview.com/article/5082/1
thespacereview.com/article/5082/1
October 21, 2025 at 11:42 AM
My new article with Harry is up:
thespacereview.com/article/5082/1
thespacereview.com/article/5082/1
I will have two articles in Monday's The Space Review. One of them is about this 1984 study of a Mars mission. It was produced by a workshop at the University of Boulder, Colorado at the Case for Mars II conference.
October 19, 2025 at 12:47 PM
I will have two articles in Monday's The Space Review. One of them is about this 1984 study of a Mars mission. It was produced by a workshop at the University of Boulder, Colorado at the Case for Mars II conference.
No Kings rally, Washington, DC, October 18, 2025.
October 18, 2025 at 10:24 PM
No Kings rally, Washington, DC, October 18, 2025.
Reposted by Dwayne Day
The Vantor company (formerly Maxar) used one of their Worldview satellites to capture a picture of the NASA-ISRO SAR (NISAR) satellite in orbit. The large radar reflector (12 meters or 38 feet wide) has a mesh surface that appears gold and the solar panels on […]
[Original post on mastodon.social]
[Original post on mastodon.social]
October 17, 2025 at 8:13 PM
The Vantor company (formerly Maxar) used one of their Worldview satellites to capture a picture of the NASA-ISRO SAR (NISAR) satellite in orbit. The large radar reflector (12 meters or 38 feet wide) has a mesh surface that appears gold and the solar panels on […]
[Original post on mastodon.social]
[Original post on mastodon.social]
Reposted by Dwayne Day
The "Discovery" from 2001 at one point had tension cables along the spine, and large cooling vanes, (required for the nuclear engines).
Here's my take on that
Here's my take on that
October 17, 2025 at 5:18 PM
The "Discovery" from 2001 at one point had tension cables along the spine, and large cooling vanes, (required for the nuclear engines).
Here's my take on that
Here's my take on that
Reposted by Dwayne Day
Another alternate design for 2001's "Discovery", this version is generally known as the "Dragonfly" design.
October 17, 2025 at 5:23 PM
Another alternate design for 2001's "Discovery", this version is generally known as the "Dragonfly" design.
I will have two articles in The Space Review on Monday. One of them is about the 1984 Case for Mars II workshop study of a human mission to Mars. Carter Emmart illustrated that study. This was his business card. Printed front and back.
October 17, 2025 at 3:33 PM
I will have two articles in The Space Review on Monday. One of them is about the 1984 Case for Mars II workshop study of a human mission to Mars. Carter Emmart illustrated that study. This was his business card. Printed front and back.