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6 Sky Events This Week: Dragon Spits Fire and Jupiter’s Moons Play Tag


Hubble Space Telescope Snaps Jupiter's moon Io and it's tiny shadow sweep across the planet's giant face back in 1999. This week backyard telescope users get a chance to witness shadows of three moons transit.  Credit: John Spencer (Lowell Observatory) and NASA
Jupiter’s moon Io and its tiny shadow sweep across the giant planet’s face back in 1999, as snapped by the Hubble Space Telescope. This week, backyard telescope users get a chance to witness the shadows of three of Jupiter’s moons. Credit: John Spencer (Lowell Observatory) and NASA

Sky-watchers double down on shooting stars this week, while the largest planet in the solar system plays host to a rare triple play of tiny moon shadows racing across its face.

Moon joins Venus. After sunset on Monday, October 7, and again the next evening, watch for the thin crescent moon gliding past the brightest planet in the sky, Venus. Sitting not far from the sun this week, the planet named for the Roman goddess of love will be fairly close to the southwest horizon, especially for mid-latitude observers, making binoculars a great tool for picking the planet out from the sunset glow.

Draconids peak. Look toward the high northwest skies starting after nightfall on Monday and then again on Tuesday, October 8, for the minor Draconid meteor shower.

Like most meteor showers, the Draconids are named after the constellation from which they appear to radiate—in this case, Draco, the dragon.

At the shower’s peak, Draco will be nearly overhead around local midnight throughout the Northern Hemisphere. Draconids are best viewed from when darkness falls until midnight, when the constellation is at its highest in your local skies. The dragon’s shooting stars are fairly easy for beginner sky-watchers to see, since the stars are considered some of the slowest moving of any shower.

Draconid meteors appear to radiate from Draco constellation in the northern evening sky. Credit: Starry Night Software
Draconid meteors appear to radiate from the Draco constellation in the northern evening sky. Credit: Starry Night Software

The flurry of meteors actually comes from a stream of sand grain-size particles spread along the orbit of the comet 21P/Giacobini-Zinner. When Earth slams into this debris stream, the comet particles disintegrate in our upper atmosphere, creating streaks of light.

(Related: “New Meteor Shower Discovered; May Uncover New Comet.”)

Venus triangle. At dusk on Tuesday, October 8, the moon will rise to the upper left of Venus to form an equilateral triangle with the bright orange star, Antares, which is some 600 light-years away from Earth.

Southern Taurid meteors. In the predawn hours of Thursday, October 10, look toward the southern sky for another minor meteor shower. The Southern Taurids are set to peak around 2 a.m. local time, after the moon sets, and promise about five shooting stars per hour. The Taurids tend be brighter and slower moving than the average shower, making them fun to watch even from city suburbs.

First-quarter moon. On Friday, October 11 (7:02 p.m. EDT/23:02 UT), the moon, half lit, will appear perched above the constellation Sagittarius, marked by the stellar “teapot” pattern, which is visible low in the southwest evening sky.

Triple shadows on Jupiter. In the early morning hours (12:32 to 1:37 a.m. EDT/4:32 to 5:37 UT) of Saturday, October 12, backyard telescope users will be able to glimpse a rare sight—the shadows of three moons of Jupiter as they transit across the planet’s disk.

Three of Jupiter’s largest moons, Io, Europa, and Callisto, will cast their tiny dot-like shadows at the same time onto the upper cloud deck of Jupiter.

Callisto’s shadow is the first to appear, at 11:12 p.m. EDT on Friday night, followed by Europa’s shadow at 11:24 p.m. and finally Io’s little shadow at 12:32 a.m.—after which all three tiny dots will cross simultaneously across the planet’s disk.

The best views will be from Africa, Europe, and the eastern coast of North America. If you miss this one, the next chance you’ll get for a Jovian moon triple play is on June 3, 2014.

Tell us—what amazing sky phenomena have you seen lately?

Follow Andrew Fazekas, the Night Sky Guy, on Twitter and Facebook.


  1. Chuck Archer
    United States
    November 18, 2013, 11:32 pm

    I must have found this too late to use!

  2. Robin Blumenstein
    Sandbridge, VA.
    October 20, 2013, 8:21 pm

    There is an large white bright round object in the west sky and it has green and red lights on it.

  3. Antoinette Amegbletor
    October 9, 2013, 7:08 pm

    This sounds very exciting, I have seen wonderful sunset in my country lately, and the skyline so adorable to watch.
    Thanks so much NaGeo!!

  4. Christy Ryburn
    October 9, 2013, 11:11 am

    my husband and i saw the most amazing bright light next to moon last night around 8 and 30 min later it was gone. wish i new what it was

  5. henry nail
    October 9, 2013, 10:35 am

    me encantaria que me mandaran la informacion en castellano
    me encantan la informacion

  6. Dilip Changmai
    Dibrugarh, Assam India
    October 9, 2013, 7:54 am

    I shall request my friends to observe this event.

  7. Shefali
    October 9, 2013, 5:10 am

    Does the “Local Time ” 2 a.m. with reference to southern taurid meteors suggests i can watch for them at 2 a.m as per Indian Standard Time (GMT+5hrs30min) too??

  8. Shefali
    Pune india
    October 8, 2013, 9:23 pm

    I am from India , So around what time should i be looking out for Taurid meteor showers on 10 Oct?

  9. Aakriti
    October 8, 2013, 12:28 pm

    Felt good to know that so much is lined up for sky gazers this week 🙂 excited

  10. Andrew Dixon
    Chinchilla, Queensland, Australia
    October 7, 2013, 5:26 pm

    Will I be able to see the showers in Australia from my location? Which direction and time should I look? Cheers Andrew D