The exoplanet they discovered, 51 Pegasi b – 51 Peg b – is a "hot Jupiter" gas giant. It has a 4-day "year," the time it takes to orbit its star. Because it's so close, it's HOT🔥 : 1,000-1,800°🌡 F (538-982° C). This blistering world is 51 light-years from Earth🌍

One of the strangest things in the cosmos✨ might be ... us. Among the thousands of exoplanets we've found in orbit around other stars🌟, there's nothing quite like our home🌎 So, is Earth the oddball? go.nasa.gov/30Ik9yD

Today is #WorldMentalHealthDay We're so glad each one of you is here with us on this journey of exploration. Spend a minute with these images from NASASpitzer and take care of yourselves. We need you❤️

We've confirmed 4,073 planets beyond our own solar system – exoplanets – so far💫 Each week we add to the known worlds. #MondayMotivation: Search for understanding wherever you can. exoplanets.nasa.gov

The center of our galaxy🌀 is cloudy with dust and gas. A black hole🕳 4 million times more massive than the Sun☀️ is surrounded by millions of whipping stars✨ NASASpitzer got this view in infrared; NASA Webb Telescope's infrared instrument will be even better👀 go.nasa.gov/2VtgCTc

The exoplanets we've discovered so far are within the Milky Way galaxy, but beyond our own solar system. Now, Hubble has spotted an interstellar comet☄️ (its speed and trajectory indicate it also comes from beyond our solar system). 👋 friend! go.nasa.gov/2VWuSnT

📣Discovery Alert!📣 Astronomers have found the closest multi-planet system to Earth🌏 GJ 15 A b and c orbit a red-dwarf star, just 11 light-years💡↝ away. One planet is a super-heated super Earth, the other could be an icy gas giant. go.nasa.gov/33CFaMu

Dark matter: it’s invisible, mysterious and surrounds us all Watch and chat with with leading astrophysicists tomorrow, Oct 17 at 7 pm PT (10 pm ET, 0200 UTC) to hear more about this material that makes up 95% of the universe: youtu.be/DWtrkeSX9dA

Join experts live TODAY as we discuss the most complex telescope ever created. NASA Webb Telescope will be like a powerful time machine peering back over 13.5 billion years to see some of the first galaxies forming. ❓#AskNASA ⏰ 4:30-5pm ET / 1:30-2pm PT 📺 nasa.gov/nasasciencelive

LIVE NOW: Tune in for a new episode of #NASAScience Live to learn more about NASA Webb Telescope, the next great observatory and our quest to understand the solar system and beyond. Watch and submit questions using #AskNASA: x.com/i/broadcasts/1…

LIVE NOW: During today’s #AllWomanSpacewalk, we have helmet camera views so that you can see what Christina H Koch and Jessica Meir experience as they work outside of the International Space Station. Tune in & ask questions using #AskNASA: x.com/i/broadcasts/1…

🚨Final call! 🚨It’s the last day to sign up for the universe’s largest, international, #hackathon. Register to be part of NASA International Space Apps Challenge and help build innovative solutions to real-world challenges we face on Earth, using NASA open data: 2019.spaceappschallenge.org/auth/signup/

#NASAWebb is part of the #SpaceApps challenge this year! Check out our challenge, “Up, Out, and Away!” - 2019.spaceappschallenge.org/challenges/sta… (Teams need to submit their product between Oct. 18-20.)

Our assembled NASA Webb Telescope telescope passed a critical test: full sunshield deployment! ☀️🛡️🔭 The reflective, 5-layer sunshield is the size of a tennis court and will protect the telescope's mirrors and scientific instruments from light and heat. Details: go.nasa.gov/2pByob8