Tag Archives: Vega

NASA Night Sky Notes: Spot The Stars Of The Summer Triangle

Poster’s Note: One of the many under-appreciated aspects of NASA is the extent to which it publishes quality science content for children and Ph.D.’s alike. Your tax dollars help promote science! The following article was provided for reprinting by the Night Sky Network in September, 2019.

By David Prosper

September skies are a showcase for the Summer Triangle, its three stars gleaming directly overhead after sunset. The equinox ushers in the official change of seasons on September 23. Jupiter and Saturn maintain their vigil over the southern horizon, but set earlier each evening, while the terrestrial planets remain hidden.

The bright three points of the Summer Triangle are among the first stars you can see after sunset: Deneb, Vega, and Altair.  The Summer Triangle is called an asterism, as it’s not an official constellation, but still a striking group of stars. However, the Triangle is the key to spotting multiple constellations! Its three stars are themselves the brightest in their respective constellations: Deneb, in Cygnus the Swan; Vega, in Lyra the Harp; and Altair, in Aquila the Eagle. That alone would be impressive, but the Summer Triangle also contains two small constellations inside its lines, Vulpecula the Fox and Sagitta the Arrow. There is even another small constellation just outside its borders: diminutive Delphinus the Dolphin. The Summer Triangle is huge!

The equinox occurs on September 23, officially ushering in autumn for folks in the Northern Hemisphere and bringing with it longer nights and shorter days, a change many stargazers appreciate. Right before sunrise on the 23rd, look for Deneb – the Summer Triangle’s last visible point – flickering right above the western horizon, almost as if saying goodbye to summer.

The Summer Triangle region is home to many important astronomical discoveries. Cygnus X-1, the first confirmed black hole, was initially detected here by x-ray equipment on board a sounding rocket launched in 1964. NASA’s Kepler Mission, which revolutionized our understanding of exoplanets, discovered thousands of planet candidates within its initial field of view in Cygnus. The Dumbbell Nebula (M27), the first planetary nebula discovered, was spotted by Charles Messier in the diminutive constellation Vulpecula way back in 1764!

Planet watchers can easily find Jupiter and Saturn shining in the south after sunset, with Jupiter to the right and brighter than Saturn. At the beginning of September, Jupiter sets shortly after midnight, with Saturn following a couple of hours later, around 2:00 am. By month’s end the gas giant duo are setting noticeably earlier: Jupiter sets right before 10:30pm, with Saturn following just after midnight. Thankfully for planet watchers, earlier fall sunsets help these giant worlds remain in view for a bit longer. The terrestrial planets, Mars, Venus, and Mercury, remain hidden in the Sun’s glare for the entire month.

Discover the latest in space science from the NASA missions studying our universe at nasa.gov

Once you spot the Summer Triangle, you can explore the cosmic treasures found in this busy region of the Milky Way. Make sure to “Take a Trip Around the Triangle“ before it sets this fall! Find the full handout at bit.ly/TriangleTrip
This wider view of the area around the Summer Triangle includes another nearby asterism: the Great Square of Pegasus.

The Night Sky Network program supports astronomy clubs across the USA dedicated to astronomy outreach. Visit nightsky.jpl.nasa.gov to find local clubs, events, and more!

NASA Space Place – A Trip Through the Milky Way

Poster’s Note: One of the many under-appreciated aspects of NASA is the extent to which it publishes quality science content for children and Ph.D.’s alike. NASA Space Place has been providing general audience articles for quite some time that are freely available for download and republishing. Your tax dollars help promote science! The following article was provided for reprinting in September, 2018.

By Jane Houston Jones and Jessica Stoller-Conrad

2013february2_spaceplaceFeeling like you missed out on planning a last vacation of summer? Don’t worry—you can still take a late summertime road trip along the Milky Way!

The waning days of summer are upon us, and that means the Sun is setting earlier now. These earlier sunsets reveal a starry sky bisected by the Milky Way. Want to see this view of our home galaxy? Head out to your favorite dark sky getaway or to the darkest city park or urban open space you can find.

While you’re out there waiting for a peek at the Milky Way, you’ll also have a great view of the planets in our solar system. Keep an eye out right after sunset and you can catch a look at Venus. If you have binoculars or a telescope, you’ll see Venus’s phase change dramatically during September—from nearly half phase to a larger, thinner crescent.

Jupiter, Saturn and reddish Mars are next in the sky, as they continue their brilliant appearances this month. To see them, look southwest after sunset. If you’re in a dark sky and you look above and below Saturn, you can’t miss the summer Milky Way spanning the sky from southwest to northeast.

You can also use the summer constellations to help you trace a path across the Milky Way. For example, there’s Sagittarius, where stars and some brighter clumps appear as steam from a teapot. Then there is Aquila, where the Eagle’s bright Star Altair combined with Cygnus’s Deneb and Lyra’s Vega mark what’s called the “summer triangle.” The familiar W-shaped constellation Cassiopeia completes the constellation trail through the summer Milky Way. Binoculars will reveal double stars, clusters and nebulae all along the Milky Way.

Between Sept. 12 and 20, watch the Moon pass from near Venus, above Jupiter, to the left of Saturn and finally above Mars!

This month, both Neptune and brighter Uranus can also be spotted with some help from a telescope. To see them, look in the southeastern sky at 1 a.m. or later. If you stay awake, you can also find Mercury just above Earth’s eastern horizon shortly before sunrise. Use the Moon as a guide on Sept. 7 and 8.

Although there are no major meteor showers in September, cometary dust appears in another late summer sight, the morning zodiacal light. Zodiacal light looks like a cone of soft light in the night sky. It is produced when sunlight is scattered by dust in our solar system. Try looking for it in the east right before sunrise on the moonless mornings of Sept. 8 through Sept 23.

You can catch up on all of NASA’s current—and future—missions at www.nasa.gov

Caption: This illustration shows how the summer constellations trace a path across the Milky Way. To get the best views, head out to the darkest sky you can find. Credit: NASA/JPL-Caltech

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With articles, activities, crafts, games, and lesson plans, NASA Space Place encourages everyone to get excited about science and technology. Visit spaceplace.nasa.gov (facebook|twitter) to explore space and Earth science!

CNYO Spring 2016 Observing Session At Beaver Lake Nature Center On Thursday, April 28th (Raindate: May 5th)

FINAL UPDATE: 4 May – 2:00 p.m. – The weather for tomorrow night is predicted to be lousy for observing, so we’re making the official call early to CANCEL tomorrow night’s event at Beaver Lake Nature Center. Stay tuned for an event announcement about The Mercury Transit happening on May 9th!

UPDATE: 28 April – 2:00 p.m. – Sadly, the cloud cover is not agreeable for observing tonight (as also reported by Glenn Coin at syracuse.com), so we are pushing the observing session off to next Thursday, May 5th. Stay tuned!

UPDATE: 28 April – 10:00 a.m. – The sky conditions for tonight are not looking good for observing. We’ll make a final call around 2:00 p.m. and, if necessary, plan for next Thursday instead.

H/T to Glenn Coin for posting the announcement to syracuse.com (and various related pick-up CNY sites).

Greetings, fellow astrophiles!

The time has come again to make our seasonal Thursday night trek [beaver lake announcement; meetup.com event] to the Beaver Lake parking lot for views of the Nighttime Spring Sky. For 2016, we’ve the added bonus of having prime planetary viewing for the entire session, featuring Mercury to our West just after sunset (and even before if Bob Piekiel’s GOTO scope is ready) and Jupiter, biting at the feet of Leo the Lion, in the sky throughout – having reached opposition in early March.

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Views from the 2006 Transit of Mercury. Photo from nationalgeographic.com

Mercury will be giving us a double-dose of observing in the next few weeks as we approach its Transit on the morning of May 9th (for which Bob Piekiel is hosting a special (and unusually early!) event at Baltimore Woods from 8 to 10 a.m. On Monday, May 9th – event notice to follow!). For those who managed a view of the Transit of Venus in 2012, this is your chance to say you saw the only two planetary Transits you can from Earth – you’ll then have to move to Mars to try to make any kind of inferior planet trifecta.


Google map for Beaver Lake Nature Center. Click to get directions.

LeoTripletHunterWilsonThe Thursday session at Beaver Lake will be our last chance to see any sign of the Orion Nebula (and it will be heroic observing at that, given how close to the tree line it may be by the time it’s dark enough), but M13 in Hercules, the Leo Triplet (shown at right – and they will not look this good from Beaver Lake! Image from wikipedia.org), several other notable Messier Objects, and whatever satellites happen to fly over will be on hand to keep the observing and conversation going.

By the usual ending time for the event, the bright star Vega in the constellation Lyra will just be rising above the Northeastern skyline, striking the chord to herald the soon-approaching return of Summer Skies and our views into the heart of our Milky Way Galaxy.