Sky Telescope Noticas recientes

1. Icy Rivers May Have Flowed on Ancient Mars

   A polar cap of carbon-dioxide ice may have provided the thermal blanket needed for rivers and a huge lake to form in the planet’s southern highlands.

   The post Icy Rivers May Have Flowed on Ancient Mars appeared first on Sky & Telescope.

2. Makemake’s “Hot Spot”: Icy Volcano or Dusty Ring?

   Even though it’s nearly 4½ billion miles from the Sun, far-flung Makemake has surprised observers with a warmer-than-expected temperature that is challenging to explain.

   The post Makemake’s “Hot Spot”: Icy Volcano or Dusty Ring? appeared first on Sky & Telescope.

3. A Bubbly Origin for Odd Radio Circles

   Discovered in 2019, odd radio circles (ORCs) are among the newest and most mysterious astrophysical phenomena. New research examines how bubbles blown by black hole jets could create these striking features.

   The post A Bubbly Origin for Odd Radio Circles appeared first on Sky & Telescope.

4. This Week's Sky at a Glance, November 15 – 24

   Venus and Mercury continue as a duo in the western twilight this week. The Moon visits Jupiter, then Mars. Saturn shines lonely below the Great Square.

   The post This Week's Sky at a Glance, November 15 – 24 appeared first on Sky & Telescope.

5. New Views of Vega’s Dusty Disk

   High-resolution images reveal the debris disk around Lyra’s brightest star to be exceedingly smooth. If any planets lurk therein, they must be small.

   The post New Views of Vega’s Dusty Disk appeared first on Sky & Telescope.

6. Watch the Moon Occult the Pleiades, Spica too!

   The Moon crosses the Pleiades this week, then heads east for the year's most dramatic Spica occultation.

   The post Watch the Moon Occult the Pleiades, Spica too! appeared first on Sky & Telescope.

7. Arecibo’s Powerful Radar May Have Contributed to the Telescope’s Demise

   The Arecibo Observatory’s radar system may have produced currents that weakened the zinc sockets holding the cables in place, new report says.

   The post Arecibo’s Powerful Radar May Have Contributed to the Telescope’s Demise appeared first on Sky & Telescope.

8. This Week's Sky at a Glance, November 8 – 17

   The stars betray that we've tipped from the season of warm evenings to the cold (or at least crisp). And the Moon this week skims Saturn, then the Pleiades.

   The post This Week's Sky at a Glance, November 8 – 17 appeared first on Sky & Telescope.

9. A Radio Burst from a Giant "Dead" Galaxy

   Exotic magnetars make brief, powerful flashes of radio waves — but a new discovery suggests there may be more than one way to make a magnetar.

   The post A Radio Burst from a Giant "Dead" Galaxy appeared first on Sky & Telescope.

10. Get to Know the Southern Constellation Grus, the Crane

    Take a flight through Grus, one of the famous “southern birds” constellations.

    The post Get to Know the Southern Constellation Grus, the Crane appeared first on Sky & Telescope.