Abstract: In this article, we propose a maneuvering target tracking algorithm based on the sojourn-time-dependent semi-Markov variable structure interacting multiple model (STDM-VSIMM) filter. Due to ...
The Elon Musk-led firm said its broadband-beaming asset vented its propulsion tank and saw its orbit decay rapidly, releasing a “small number of trackable low relative velocity objects” — seemingly a ...
An underwater observatory recently detected a startlingly energetic cosmic neutrino. One possible cause involves a phenomenon that so far exists only in theory. By Dennis Overbye On Feb. 13, 2023, a ...
The fighting continues in the Middle East, and oil’s back on the move, as the clock ticks on President Donald Trump’s five-day deadline for resolving differences with Iran. That’s the backdrop for ...
NASA’s Hubble telescope captured an “extraordinarily” rare moment of a comet exploding into fragments, the space agency said. The comet K1, whose full name is C/2025 K1 (ATLAS), was caught fragmenting ...
Abstract: This paper presents a novel halftoning algorithm based on continuous relaxation and gradient-based optimization. By reformulating the original binary quadratic programming (BQP) problem into ...
A fiery streak across the sky and a loud boom greeted many residents of northeast Ohio on the morning of March 17. The rare celestial spectacle, which took place a little before 9 A.M. Eastern ...
In a stroke of luck, astronomers saw the comet C/2025 K1 (ATLAS) break into four or five fragments in November after it passed close to the sun. By Robin George Andrews Astronomers on Wednesday ...
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