For three hours, between about 6:35 P.M. and 9:35 P.M. EST, only three moons are visible: Io alone to the west and Ganymede (closer) and Callisto to ... Canis Major is one of the standout ...

Now that the evening sky is Moon-free, it's time to aim for fainter targets, including 12th-magnitude Comet 333P/LINEAR.

A Russian cargo ship has sunk in the Mediterranean Sea after an explosion onboard, Russia’s Foreign Ministry said on Dec. 24.

Ursa Major said it developed a new solid rocket motor from scratch in four months, and has now flown it twice in partnership with Raytheon. (Ursa Major) Raytheon and growing propulsion firm Ursa ...

TUCSON, Ariz., Dec. 18, 2024 /PRNewswire/ -- Raytheon, an RTX (NYSE: RTX) business, and Ursa Major announced its advanced long-range solid rocket motor completed a successful missile flight test ...

Raytheon’s Tucson-based missile manufacturing operation this week announced a successful missile test for an advanced long-range solid rocket motor it is developing together with Colorado ...

A Russian vessel, Ursa Major, sank in the Mediterranean after an explosion, leaving two crew members missing. The ship was operated by Oboronlogistika, a Russian Defence Ministry-affiliated ...

WASHINGTON — Rocket propulsion startup Ursa Major announced Dec. 18 that one of its solid rocket motors completed a successful flight test on a Raytheon-built missile for the U.S. Army.

Raytheon’s missile manufacturing operation announced a successful test for an advanced long-range military solid rocket motor it's developing with a Colorado aerospace propulsion systems maker.