On June 23, the @Smithsonian is celebrating the first Saturday of summer with an evening of #SolsticeSaturday activities. Our Museum in DC will be open until midnight, with #airandspace trivia and stargazing. Details: s.si.edu/2t8fkzR

Tonight at 8:00 pm EDT, it's our final 2018 Exploring Space lecture! Hear from Robert Smith of the University of Alberta about the historical context for the NASA Webb Telescope Space Telescope. Watch live here: airandspace.si.edu/events/histori…

We're supposed to have stargazing tonight. The weather is not looking hopeful. We'll make an official decision soon (this is the projected radar for 9:00 pm). Excuse us while we go obsess over a bunch of other weather sites...

Okay, stargazing is officially cancelled for tonight. Boo! But maybe it will be clear this weekend for our various Solstice Saturday festivities around the Smithsonian? Check out the all-day National Air and Space Museum offerings here: airandspace.si.edu/events/solstic…

We're closed due to clouds. Join us inside for hands-on #astronomy activities from 11am-3pm, like holding a real space rock or exploring the different colors in stars!

National Museum of the American Indian @NMAfA Smithsonian’s NMAAHC Hirshhorn @NPG Smithsonian Well-a, well-a, well-a, uh! Tell me more, tell me more Can I learn about flight? ✈️ Tell me more, tell me more Can I see satellites?📡 #SolsticeSaturday #SmithsonianNights

So, what exactly is the #SummerSolstice? ☀️ Let our experts at Public Observatory share the basics, plus 3 things you might not know about the longest day of the year: s.si.edu/2MNFQa3

It's cloudy and we're indoors! Meet us in the Explore the Universe gallery to play an astronomy game with us.

We're closed today due to rain and clouds. Join us inside for astronomy and solstice activities until 4pm! #SolsticeSaturday

TODAY! Stop by our Museum in DC to learn all about the Sun as part of the @Smithsonian's #SolsticeSaturday festivities.

When summer only comes around every 120 years, the summer solstice is a pretty big deal. As we celebrate #SolsticeSaturday, learn about the seasons on Triton, Neptune's largest moon: s.si.edu/2IkVeat

The Solstice Star Party is canceled tonight due to weather. Join us inside National Air and Space Museum for activities until midnight! Hands-on astronomy in Explore the Universe until 10:30pm, trivia competitions at 9:30, 10:30, and 11:30pm; free planetarium show at 10pm. #SolsticeSaturday

We're open! Stop by to look through a solar telescope, like this Hydrogen-Alpha telescope we're setting up right now!

We're open on this steamy day! Stop by on your way to air conditioning to view the Sun safely, 11am-3pm!

Join us in the Explore the Universe gallery at 11am today for an #AstronomyChat with Violette Impelllizzeri! airandspace.si.edu/events/astrono…

Due to the heat advisory today, the Observatory is closed. Join us in the Explore the Universe gallery for hands-on activities!

Join us tonight from 9:00 to 11:00 pm for stargazing (or, more accurately, planet-gazing!). The sky has a planet bonanza, with Venus, Jupiter and Saturn all visible shortly after sunset. This event is free! Find us at Independence Ave and 4th St SW. airandspace.si.edu/events/stargaz…

Hello #astronomy friends! We are retiring this Twitter account at the end of the month. For our photos and news, follow National Air and Space Museum For our info and hours, visit our website: airandspace.si.edu/observatory For updates, sign up for Public Observatory news: airandspace.si.edu/topics/subscri…

This account is going away soon. Follow National Air and Space Museum to catch our posts!

This account is now retired. We've had an awesome 7 years chatting with all of you. You can find us over National Air and Space Museum sharing astronomy news and events, and reminding you to always keep looking up. Clear skies! #SIObservatory