Narrated Tour of Fermi's 14-Year Gamma-Ray Time-Lapse
The cosmos comes alive in an all-sky time-lapse movie made from 14 years of data acquired by NASA’s Fermi Gamma-ray Space Telescope. Our Sun, occasionally flaring into prominence, serenely traces a path though the sky against the backdrop of high-energy sources within our galaxy and beyond. Gamma rays are the highest-energy form of light. The movie shows the intensity of gamma rays with energies above 200 million electron volts (MeV) detected by Fermi’s Large Area Telescope (LAT) between August 2008 and August 2022. For comparison, visible light has energies between 2 and 3 electron volts. Brighter colors mark the locations of more intense gamma-ray sources. The movie shows the sky in two different views. The rectangular view shows the entire sky with the center of our galaxy in the middle. This highlights the central plane of the Milky Way, which glows in gamma rays produced from cosmic rays striking interstellar gas and starlight. It’s also flecked with many other sources, including neutron stars and supernova remnants. Above and below this central band, we’re looking out of our galaxy and into the wider universe, peppered with bright, rapidly changing sources. Most of these are actually distant galaxies, and they’re better seen in a different view centered on our galaxy’s north and south poles. Each of these galaxies, called blazars, hosts a central black hole with a mass of a million or more Suns. Somehow, the black holes produce extremely fast-moving jets of matter, and with blazars we’re looking almost directly down one of these jets, a view that enhances their brightness and variability. Many of these galaxies are extremely far away. For example, the light from a blazar known as 4C +21.35 has been traveling for 4.6 billion years, which means that a flare up we see today actually occurred as our Sun and solar system were beginning to form. Other bright blazars are more than twice as distant, and together provide striking snapshots of black hole activity throughout cosmic time. Not seen in the time-lapse are many short-duration events that Fermi studies, such as gamma-ray bursts, the most powerful cosmic explosions. This is a result of processing data across several days to sharpen the images. Access video descriptive text here: https://svs.gsfc.nasa.gov/vis/a010000/a014300/a014399/Fermi_14Year_Narrated_HTML_Video_Descriptive_Text.html Music credit: "Expanding Shell" written and produced by Lars Leonhard. Credit: NASA’s Goddard Space Flight Center and NASA/DOE/LAT Collaboration Producer: Scott Wiessinger (Rothe Ares Joint Venture) Science writer: Francis Reddy (University of Maryland College Park) Visualizer: Seth Digel (SLAC National Accelerator Laboratory) Narrator: Judith Racusin (NASA/GSFC) Scientist: Judith Racusin (NASA/GSFC) This video can be freely shared and downloaded at https://svs.gsfc.nasa.gov/14399. While the video in its entirety can be shared without permission, the music and some individual imagery may have been obtained through permission and may not be excised or remixed in other products. Specific details on such imagery may be found here: https://svs.gsfc.nasa.gov/14399. For more information on NASA’s media guidelines, visit https://nasa.gov/multimedia/guidelines. If you liked this video, subscribe to the NASA Goddard YouTube channel: https://www.youtube.com/NASAGoddard Follow NASA’s Goddard Space Flight Center · Instagram http://www.instagram.com/nasagoddard · X http://twitter.com/NASAGoddard · Facebook: http://www.facebook.com/NASAGoddard · Flickr http://www.flickr.com/photos/gsfc
12/20/2023 4:04:45 PM
Camila Cabello Creates a New Song For Jimmy, Talks Meaning Behind Album C,XOXO (Extended)
Camila Cabello talks about her ice purse meltdown at the 2024 Met Gala and the meaning behind her album C,XOXO before creating a song inspired by Jimmy and The Tonight Show. The Tonight Show Starring Jimmy Fallon. Stream now on Peacock: https://bit.ly/3gZJaNy Subscribe NOW to The Tonight Show Starring Jimmy Fallon: http://bit.ly/1nwT1aN Watch The Tonight Show Starring Jimmy Fallon Weeknights 11:35ET/10:35c Get more The Tonight Show Starring Jimmy Fallon: https://www.nbc.com/the-tonight-show JIMMY FALLON ON SOCIAL Follow Jimmy: http://Twitter.com/JimmyFallon Like Jimmy: https://Facebook.com/JimmyFallon Follow Jimmy: https://www.instagram.com/jimmyfallon/ Follow Jimmy on TikTok: https://www.tiktok.com/@jimmyfallon THE TONIGHT SHOW ON SOCIAL Follow The Tonight Show: http://Twitter.com/FallonTonight Like The Tonight Show: https://Facebook.com/FallonTonight Follow The Tonight Show: https://www.instagram.com/fallontonight/ The Tonight Show TikTok: https://www.tiktok.com/@fallontonight Tonight Show Tumblr: http://fallontonight.tumblr.com The Tonight Show Starring Jimmy Fallon features hilarious highlights from the show, including comedy sketches, music parodies, celebrity interviews, ridiculous games, and, of course, Jimmy's Thank You Notes and hashtags! You'll also find behind the scenes videos and other great web exclusives. GET MORE NBC NBC YouTube: http://bit.ly/1dM1qBH Like NBC: http://Facebook.com/NBC Follow NBC: http://Twitter.com/NBC NBC Instagram: http://instagram.com/nbctv NBC Tumblr: http://nbctv.tumblr.com/ Camila Cabello Creates a New Song For Jimmy, Talks Meaning Behind Album C,XOXO (Extended) http://www.youtube.com/fallontonight #FallonTonight #CamilaCabello #JimmyFallon
6/13/2024 3:50:00 AM