There's a big diamond in the sky made by connecting the stars Arcturus, Spica, Denebola and Cor Caroli. Once found, you can ...

This Top 10 in Data Journalism column also highlights the death of a Ukrainian journalist in a Russian prison, Trump’s first ...

Arcturus (at a magnitude of -0.05), one of the few stars mentioned by name in the Bible, is a giant, about 25 times the ...

A novel LEO constellation design uses grouped satellites and swarm optimization to achieve precise Earth observation, ...

The constellations march ever westward ... Just to the right of Spica, the most striking star pattern in the spring skies next to Leo's Sickle is a little four-sided figure of fairly bright ...

R Leonis, a variable star in Leo, is currently below naked-eye magnitude, but you can easily find it with binoculars or a ...

A new preprint suggests that an ancient Chinese star catalog dates to 355 B.C.E. But other researchers aren't convinced, ...

Addressing these challenges demands a new approach to extracting usable navigation data from LEO constellations. In 2025, a study (DOI: 10.1186/s43020-025-00163-y) published in Satellite Navigation.