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APOD Science APOD APOD: 2026 September 4 – Na… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss   APOD Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. Nā ʻUhane … Read more

Venus is seen as it disappears behind the Moon at the start of the occultation on June 17, 2026, from the Mary W. Jackson NASA Headquarters building in Washington NASA/Joel Kowsky On Wednesday, June 17, skywatchers across the United States—and parts of Canada—enjoyed a rare event: a daytime lunar occultation of Venus. A lunar occultation … Read more

Two technicians at NASA’s Michoud Assembly Facility in New Orleans stand around one of the four RS-25 engines for the agency’s SLS (Space Launch System) rocket on Sept. 8, 2023. The RS-25 engine looks like a bell-shaped nozzle attached to a network of pipes. The engine is being lifted by the horizontal engine installer so … Read more

The fire department at NASA’s Ames Research Center in California’s Silicon Valley will perform training on the Moffett Federal Airfield beginning Tuesday, Sept. 8 through Friday, Sept. 11. The training will involve the use of a propane-fueled aircraft fire simulator and be conducted from 8 a.m. to 8 p.m. PDT. Because the aircraft simulator is … Read more

APOD Science APOD APOD: 2026 September 5 –… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss   APOD Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. Chasing the Moon’s … Read more

Crew chiefs assigned to the Air National Guard’s 171st Air Refueling Wing, based near Pittsburgh, keep two aerial refueling flying squadrons of KC-135 Stratotanker refueling tanker aircraft mission ready. Source: www.war.gov

Virginia’s Thomas Jefferson was a Founding Father who drafted the Declaration of Independence and who doubled the size of the country with the Louisiana Purchase while serving as the third president. Source: www.war.gov

Army Tech. Sgt. Ted Takayuki Tanouye posthumously received the Medal of Honor for his heroic actions in western Italy during World War II. Source: www.war.gov

Airmen walked in the 108th International Four Days Marches in Nijmegen, Netherlands, a long-standing, 100-mile event that brought together 47,000 participants, including 6,455 military members from 38 nations. Source: www.war.gov