
Most satellite startups are racing to build smaller. K2 Space is going the other way, on purpose. Investors just handed it $500 million to keep going bigger. K2 raised a $500 million Series D at a $6.8 billion valuation, it said on Thursday. Kleiner Pe…

A London startup building the training grounds for Europe’s autonomous weapons has come out of stealth with $30mn. It is one of the region’s largest defence-tech seed rounds this year. Agon is not building the weapons themselves. It is building the inf…

The AI cloud is heading into the vault. CoreWeave rents high-end GPUs to the biggest AI labs. Now it wants to run that same cloud inside the sealed facilities where America keeps its secrets, with the contractor Leidos as its guide. The two companies a…

Most of the money pouring into small nuclear reactors is chasing AI data centres. This round is chasing a date. Antares has raised $470mn, co-led by Paradigm and Caffeinated Capital, with Point72 Ventures, Shine Capital and Industrious Ventures joining…

Cathedral, a stealth military cybersecurity startup founded by four former Department of Government Efficiency staffers, has raised $160 million at a $1.4 billion valuation. Andreessen Horowitz and Sequoia Capital led the round and both took board seat…

GPS spoofing and jamming have become standard countermeasures on the battlefield in Ukraine, separating drones from their operators and rendering some guided munitions useless. US-made Excalibur artillery shells fell out of favour after initial success…

The Nvidia chip at the centre of America’s export fight with China has a new home: a classroom in Monterey. The Naval Postgraduate School has stood up a DGX GB300 AI supercomputer, the first in the US military, Nextgov reported. The machine runs on Nvi…

A fighter jet that needs no runway is a step closer to flight. Shield AI and GE Aerospace say they have completed engine light-off testing for the X-BAT. It is an AI-piloted strike aircraft, built to take off and land vertically. The two firms announce…