Abstract: Sparse arrays designed based on fourth-order difference co-array (DCA) can achieve significantly higher uniform degrees-of-freedom (uDOFs). However, most existing fourth-order sparse arrays ...

The Artemis II mission will be powered by four solar arrays built in Europe. Image: Airbus Defence and Space. Four giant solar ‘wings’ will provide power for the first crewed mission to the Moon in ...

A red circle is inscribed inside a blue square. The arrangement leaves gaps in the square’s four corners, two of which are filled with smaller circles that just barely touch the big red circle and the ...

The Social Security Fairness Act was passed with an overwhelming bipartisan majority and signed into law on Jan. 5, 2025, by President Joe Biden. Now, several senators are calling on the Social ...

WASHINGTON — Array Labs, a Silicon Valley startup developing radar-based Earth observation satellites, announced Jan. 5 it raised $20 million in a Series A round as it pushes to bring lower-cost ...

Poor Claptrap has once again ended up in the wrong place at the wrong time, and his robotic parts are now scattered all over the place. To start, you’ll need to find his chassis, so check your map and ...

Have you ever stared at a colorful Excel spreadsheet, wondering how to quickly calculate totals or counts based on cell colors? It’s a common frustration for anyone managing large datasets. While ...

Why is the amount you receive from the Social security office when your spouse has died still only $255? It’s been that amount for years; one would think it would increase. If your loved one dies, ...

A cinematic obsessive with the filmic palate of a starving raccoon, Rob London will watch pretty much anything once. With a mind like a steel trap, he's an endless fount of movie and TV trivia, borne ...

A trove of breached data, which has now been taken down, includes user logins for platforms including Apple, Google, and Meta. Among the exposed accounts are ones linked to dozens of governments. In ...