Abstract: The multiple input multiple output (MIMO) system deployed in multicell multiuser scenario suffers from pilot contamination due to interference. The contaminated pilot used in the channel ...

Bad news for those hoping interstellar invader 3I/ATLAS is an alien spacecraft as technosignature search turns up empty.

Abstract: There is a rising interest in single-photon emission computed tomography (SPECT) imaging systems with improved energy resolution to facilitate multifunctional molecular imaging applications, ...

Mark Medley is The Globe and Mail’s Deputy Opinion Editor. He is the author of Live to See the Day: Impossible Goals, ...

On record 2025 as one of the most amazing years in contemporary astronomy, providing findings that would turn our collective ...

I/ATLAS is not unique, in the sense that there could be billions and trillions of such objects in the Milky Way. In fact, ...

Data from the telescope indicated that the incredibly hot and small world was surrounded by a thick layer of gas, likely ...

In 2025, astronomers revealed nearby exoplanets, a rare interstellar comet, possible biosignatures on Mars, and an ...

First Solar has outperformed my $200 price target, returning over 90% since April's contrarian Buy call. FSLR's valuation support has diminished; policy and tariff risks are now largely priced in, ...

First Solar stands out among solar peers for vertical integration and early profitability, but current valuation is unsustainable. Tax credits, set to phase out by 2033, significantly inflate FSLR's ...

Omega Centauri dominates the southern sky as the Milky Way's largest and brightest globular cluster, a dense sphere containing roughly 10 million stars. Earlier this year, astronomers found evidence ...