Vesta is passing an 8th-magnitude field star, offering a great opportunity to see the space rock’s motion on the sky over just a few nights.

Contrast efficiency of telescopes is important in this case because the planet’s surface, atmosphere, and rings are composed ...

Vixen Saitama, Japan The Mobile Porta Mount is the new, easily portable piece in the popular Porta line. The alt-azimuth ...

Today in the history of astronomy, President Eisenhower signs the National Aeronautics and Space Act.

Saturn’s largest moon Titan lies well east of Saturn this morning, while several other, smaller satellites cluster closer to the rings.

Earth’s satellite and the Red Planet offer a picturesque view amid the stars of Virgo for a few hours after sunset tonight.

Here’s what’s launching from July 28 to August 3: a cutting‑edge Earth‑observation mission joins a crewed flight to the ...

Pluto reaches opposition and the Moon waxes to First Quarter as shooting stars streak through the sky this week.

A set of books belonging to Charles Messier have joined the collection of David J. Eicher, offering a rare link to the comet ...

The young open cluster NGC 6709 soars through the sky tonight, visible in Aquila with binoculars or any telescope.

Stars are more colorful than you think! Patience will reveal them; head outside tonight to see summer’s multi-hued stars.

Venus blazes near Zeta Tauri, recreating the sight astronomers saw in 1054 when the Crab Nebula’s progenitor star went ...