Space stocks are having a rough week, with SpaceX rivals AST SpaceMobile and Rocket Lab taking some of the biggest hits. William Gavin is a tech reporter for MarketWatch. He is based in New York.

In the latest close session, AST SpaceMobile, Inc. (ASTS) was down 5.99% at $104.55. The stock fell short of the S&P 500, which registered a gain of 0.54% for the day. Meanwhile, the Dow gained 1.05%, ...

AST SpaceMobile stock (NASDAQ:ASTS) – a company developing a low-Earth-orbit (LEO) satellite constellation to provide broadband directly to smartphones – experienced a 14% increase in stock value on ...

AST SpaceMobile (ASTS) won prime contract position on U.S. Missile Defense Agency’s SHIELD Program. This validates defense applications beyond cellular broadband. AST SpaceMobile burned $363M in Q3 ...

ASTS is up 61% already in 2026, with leftover contrarian potential to boot AST SpaceMobile Inc (NASDAQ:ASTS) has proven to be a worthy competitor to Elon Musk's Starlink, and is one of the biggest ...

AST SpaceMobile plans to provide "intermittent" direct-to-direct cellular service across the U.S. by early 2026. AST SpaceMobile shares are rising Friday as investors become even more hopeful that the ...

Python physics explained: tides and their mathematical model. Learn how tidal forces work and how to model them step-by-step in Python using clean math, simple assumptions, and clear visual intuition.

AST SpaceMobile Inc (NASDAQ: ASTS) extended its blistering rally Thursday, hitting a new all-time high as investors continue to pile into space-communications names. The stock is now up roughly 370% ...

AST SpaceMobile (ASTS 7.19%) stock soared in 2025. The 244% gain came as investors began to get excited about the prospect of AST tapping into a massive potential market of smartphone users who might ...

AST SpaceMobile (ASTS) faces an uphill battle to compete with Starlink and without a single retail customer, the company’s share price has “once again overshoot to what we see as irrational levels,” ...

AST SpaceMobile stock (NASDAQ:ASTS) – a company that is developing a low-Earth-orbit (LEO) satellite constellation to deliver broadband directly to smartphones – has increased by nearly 20% in the ...

AST SpaceMobile, Inc. (NASDAQ: ASTS) on Wednesday disclosed the deployment of the largest commercial communications array ever installed in low Earth orbit. The BlueBird 6 satellite successfully ...