Celestron FirstScope 76: Very affordable and ideal for kids or as a quick backyard scope. Despite the small size, you can easily catch the craters of the moon and even glimpse Jupiter’s moons.

Abstract: This communication presents an H-plane substrate integrated waveguide (SIW) horn antenna whose directivity is enhanced using holey unit cells along the horn ...

Abstract: Stemmed from our novel single-photon imaging concept of detector self-collimation—which leverages detectors themselves as collimators to overcome the inherent resolution-sensitivity ...

I spoke to Unistellar co-founder and SETI astronomer Franck Marchis about how citizen scientists are using smart telescopes to engage in planetary defense, research and observational astronomy. Here’s ...

Australia’s AMP has sold its investment management subsidiary Collimate Capital, formerly AMP Capital, to two companies. The deals will see Collimate’s international infrastructure equity business ...

We have our first million-dollar card sale of 2026, and it's a title fit for the King. A 2003 Topps Chrome Gold Refractor LeBron James Rookie /50, graded PSA 10, sold on Friday for $1.11 million, ...