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Sky at the glance

The essential guide to astronomy
  1. Jupiter and Saturn line up level in the south earlier in the evening now, as summer proceeds. How early in twilight can you see them both? High upper left of them shines Altair.

    As night comes on, look for the Sagittarius Teapot to Jupiter's lower right.

    The post This Week's Sky at a Glance, August 14 – 22 appeared first on Sky & Telescope.

  2. It's Perseid meteor week! The shower peaks on the night of August 11th, but you may see the occasional Perseid any night and perhaps already have.

    Jupiter and Saturn shine in the southeast after dark. Bright Vega passes closest to overhead around 10 or 11 p.m.

    The post This Week's Sky at a Glance, August 7 – 15 appeared first on Sky & Telescope.

  3. Mars rises in the east around 11 p.m. daylight saving time this week, in Pisces. Watch for it to come up below the Great Square of Pegasus. By dawn Mars shines grandly high and bright in the south, a far-off bonfire in the heavens.

    In a telescope Mars grows from 14½ to 15½ arcseconds in apparent diameter, as big as it appears at some oppositions! But we're still speeding toward it along Earth's faster orbit around the Sun. Around this year's opposition in early October, Mars will be 22.6 arcseconds wide.

    The post This Week's Sky at a Glance, July 31 – August 8 appeared first on Sky & Telescope.

  4. All this summer, there's no missing Jupiter and Saturn on any clear evening. Jupiter is the brightest point in the evening sky. Saturn is left of it. They're in the southeast at dusk, higher in the south later in the night.

    Meanwhile in the west, bright Arcturus shines a little less high each week. Most of its constellation Bootes extends to its upper right.

    The post This Week's Sky at a Glance, July 24 – August 1 appeared first on Sky & Telescope.

  5. The waxing crescent Moon swells back into the evening sky this week. Jupiter and Saturn are at opposition on the nights of July 13th and 20th, respectively -- so they rise around sunset, loom low in the southeast in twilight, and climb as the evening grows late. Jupiter is brightest; Saturn is 7° to its lower left. By late night they look like a pair of uneven eyes looking down at the world.

    The post This Week's Sky at a Glance, July 17 – 25 appeared first on Sky & Telescope.