marzo 27, 2026

Crack the Mystery of Bennu's Boulders and Mars's Mixed Waters

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This week in the world of astronomy, crack the mystery of Mars's mixed waters and Bennu's boulders. Plus, watch a comet break up just after it passed by the Sun.

Winter-Hexagon-map-w-Jupiter_late-March-early-April-2026-1 image

This Week's Sky at a Glance, March 27 – April 5

The signature fall-and-winter constellation Cassiopeia retreats down after dark. Look for it fairly low in the north-northwest. It's standing roughly on end (its brighter end).

NASA Has Cracked the Mystery of Asteroid Bennu’s Boulders

A new analysis of samples from the asteroid Bennu has solved a long-standing mystery: Cracks in the boulders strewn across its surface masquerade as sand.

Brown Dwarfs Dance Unexpected Tango

Two brown dwarfs are whipping around each other in a tight tango — an unexpected dance for objects that are not-quite-stars and not-quite-planets.

Many Waters May Have Mixed on Mars

Alkaline and acidic water may have mixed beneath the Martian surface, creating an environment that could theoretically have supported life.

Comet Break-Up Caught In Action

The Hubble Space Telescope caught a long-period comet breaking up just after it passed the Sun.

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Observing Highlights

Choosing the Best Lenses for Nightscapes

When nightscape photos fall short of expectations, chances are the problem is the lens.

March Podcast: The Winter Triangle

This month’s episode showcases the stars and planets visible on March evenings. Track down three planets after sunset, and savor the easy-to-spot Winter Triangle.

Presented by: Celestron.

"Leopard Spots and Poppy Seeds: Recent Developments in The Search for Evidence of Ancient Life on Mars"

Michael Velbel, emeritus professor of geological sciences at Michigan State University, will give a lecture on the most promising sample the Perseverance rover has collected to date.

The Smartest Out of the Box Smart Telescope On Sale

Spectrum’s Sky Pilot 127 may be the best combination of visual and imaging available. It includes a 53mm ED guider / imager with Intelligent camera, 127 Mak optics, alt-AZ mount, Vixen-style dovetail receiver, full-size tripod with 1.5″ diameter legs, removeable color camera with IMX662 sensor and dual band Wi-Fi and the free MirroSky APP.

From a trusted S&T partner

Observing? But it's So Cold Outside!

Stay warm with Sky & Telescope merch this January. Our high-quality, branded winter wear will help you keep out the cold while gazing up at the scintillating winter stars.