Welcome to the family of Sun-gazers, #Chandrayaan2. Your sensitive X-ray observations of #solarflares will be tremendously useful. 🌞

A whimsical look at solar flares, the release of rapidly built up magnetic energy from the Sun's surface. Fermi sees #gammarays created when a flare rapidly reorders magnetic fields, accelerating charged particles to very high energies and smashing them into the Sun's surface.

Looking forward to the interesting entries this time. The Fermi community embraces a broad range of creative activity. Here are some examples inspired by gamma-ray bursts (GRBs) which are some of the most energetic explosions in the universe: go.nasa.gov/2nOxHdX 🕺💃

For the Fermi 10 year anniversary 🙌 🎉 last year, 10 scientists shared their best Fermi moments in 10 seconds. Take a look at this collection of 10 short animations that celebrate the successes and discoveries of the NASAFermi. Maryland Institute College of Art

Fascinating! As Fermi is constantly scanning the entire sky, it can use its sharper vision to narrow down the region where a neutrino detected by IceCube could have originated. This tells other telescopes with smaller fields of view where to point and look for lower energy light.

In Sep 2017, IceCube found a neutrino with energy 300 trillion electron volts. Fermi showed that at the time of the neutrino detection, a blazar, TXS 0506+056, was the most active in #gammarays that it had been in a decade. And thereby hangs a tale: go.nasa.gov/3630NaD

Flare Advocates like Andrea are typically the first science "eyes" on Fermi LAT data, poring over the results of initial analysis and alerting the community to anything interesting going on in the sky. 👀🛰️

#FermiPeople! Meet Andrea Gokus, graduate student at Remeis Observatory (Dr. Karl Remeis-Observatory) and University of Wuerzburg. Andrea uses multi-wavelength observations to understand extreme events in active galaxies, when she is not playing cello for her band. 🎻

They are everywhere! Some 700 million of them for every proton in the universe. Even that banana you are eating emits neutrinos. Creepy huh? 👻 #HappyHalloween #HappyHalloween2019 🎃

Pulsars are actually pretty scary places to be! 😱 Their gravitational pull is so strong, you would, ahem, seriously compromise your health if you got too close! Five totally weird things about pulsars: bit.ly/2Ns4FJY #HappyHalloween #HappyHalloween2019 🎃

Last year, NASAFermi helped link a ghostly neutrino to a monster black hole. 👻 ⚫ Celebrate Halloween by learning more about this spooky discovery and more in this Tumblr post: bit.ly/327pj7b #HappyHalloween #HappyHalloween2019

#FermiPeople Congratulations to all the Fermi team member coauthors and their colleagues for their calculation of the Hubble Constant using the attenuation of extragalactic background radiation observed by NASAFermi and MAGIC telescopes 🔭🌠. arxiv.org/pdf/1903.12097…

We are moving to NASA Universe real soon! Please continue our shared journey through the extreme energy universe by following NASA Universe. See you there! fermi.gsfc.nasa.gov 🚚

#FermiScience Nice work👍 Dark matter or #gammaray pulsars, it is a win for our understanding of the evolution of our Milky Way galaxy. 🌌 For a quick Dark Matter primer look here: bit.ly/2qfDoCI

Neat example of the myriad ways astronomers use Gravitational Lensing 🔍 to probe distant parts of our universe. Take a look at svs.gsfc.nasa.gov/11437 for a look at the first gamma-ray measurement of a gravitational lens #FermiScience

Congratulations NASAFermi and NASA Swift Observatory for enabling a new era in gamma-ray science! MAGIC telescopes 🔭🌠 and hesstelescopes have detected the highest energy light yet seen from Gamma-ray Bursts (GRBs) in two GRBs discovered by NASAFermi and NASA Swift Observatory. go.nasa.gov/37iwzkJ

A pair of distant explosions discovered by NASAFermi and NASA Swift Observatory produced the highest-energy light yet seen from these events, called gamma-ray bursts. One of the bursts produced 10 times the peak energy Fermi has seen to date: go.nasa.gov/2D1DmBp

Our Fermi satellite can see a wider range of light than any other telescope ↔️ NASAFermi catches light with 10,000 to thousands to billions of times the energy our eyes can see, allowing us to discover cool things about the most extreme parts of the universe! #UniqueTalentDay