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From forest floor to space, NASA scientists and collaborators are advancing tools and methods to predict, remotely detect, and ultimately mitigate wildfires. That process starts with understanding fire behavior, tracking them with satellites, and getting that data into the hands of land managers and communities facing record-breaking fire seasons.

Description: Plasma makes up 99.9% of the visible universe, but what is it? This video discusses what plasma is, where it lives, and how NASA studies it.

Description: On Oct. 14, 2023, an annular solar eclipse will cross North, Central, and South America. Visible in parts of the United States, Mexico, and many countries in South and Central America, millions of people in the Western Hemisphere can experience this eclipse. But what is an annular eclipse? Why does it happen? And why does it create a “ring of fire” in the sky? Credits: Music: “Insect Village” by Anthony Donje [PRS], Paul Simon Elliott [PRS] via Universal Production Music

Launching in 2029, NASA’s Deep Atmosphere Venus Investigation of Noble gases, Chemistry and Imaging (DAVINCI) mission will bring a rich suite of instruments to Venus to address long standing questions about Earth’s sister planet. Some scientists think Venus may once have been more Earth-like in the past, with oceans and pleasant surface temperatures -- DAVINCI data will help us determine if this intriguing possibility is true. Clues to Venus’ mysterious past may be hidden in atmospheric gases or in surface rocks formed in association with ancient water in the planet’s mountainous highlands. During two flybys, the DAVINCI carrier, relay, and imaging spacecraft will collect data on the planet’s day side of unknown compounds that absorb ultraviolet light in the Venus upper atmosphere with an instrument called the Compact Ultraviolet to Visible Imaging Spectrometer (CUVIS); on the planet’s night side, the Venus Imaging System for Observational Reconnaissance (VISOR) will sense heat from Venus’ surface emerging from beneath the clouds to help us better understand the composition of diverse geological highlands regions across Venus. VISOR will also study clouds on the Venus day side in the ultraviolet, producing cloud motion movies. Venus has a scorching surface hotter than your home oven, and a complex atmosphere 90 times thicker than Earth’s made mostly of carbon dioxide and with sulfuric acid clouds. Two years after launch, the DAVINCI descent sphere will by dropped by the carrier spacecraft into this extreme environment to provide new direct measurements of the Venus atmosphere, and to reveal a bird’s eye view of the surface below the clouds. The descent location, the Alpha Regio “tessera,” is a mountainous highland region whose rocks may hold clues to the planet’s mysterious past. The titanium sphere is designed to withstand the harsh conditions of the Venus environment while protecting the instruments nestled inside. The Venus Tunable Laser Spectrometer (VTLS) will measure key gases that offer clues to the planet’s past, including compounds that may hint at the possible history of past water. The Venus Mass Spectrometer (VMS) will study the atmosphere in detail, including noble gases and trace gases from 67 km to the near surface. The Venus Atmospheric Structure Investigation (VASI) will measure pressure, temperature, and winds throughout the descent. Peering through a transparent sapphire window at the bottom of the descent sphere, the Venus Descent Imager (VenDI) will map the 3-D topography and composition of Alpha Regio, with topographic resolution at up to sub-meter scales. Lastly, a student collaboration experiment called the Venus Oxygen Fugacity experiment (VfOx) will be mounted to the probe to measure oxygen in the deep atmosphere. Together, this set of data will help rewrite the textbooks on Venus and may even help us better understand Venus-like planets in other solar systems. DAVINCI is a partnership between NASA’s Goddard Space Flight Center in Greenbelt, Maryland, and Lockheed Martin in Denver, Colorado, with instruments from NASA Goddard, Jet Propulsion Laboratory, Malin Space Science Systems, and key supporting hardware from Johns Hopkins Applied Physics Laboratory and the University of Michigan. Video credit: NASA's Goddard Space Flight Center/NASA's Conceptual Image Lab Producer: Michael Lentz Narration: Giada Arney Art Director: Michael Lentz Animators: Krystopher Kim Jonathan North Michael Lentz Walt Feimer Music: "The Future Ancient Now" - Nathan Moore

This new NASA animation highlights the “super” in supermassive black holes. These monsters lurk in the centers of most big galaxies, including our own Milky Way, and contain between 100,000 and tens of billions of times more mass than our Sun. Any light crossing the event horizon – the black hole’s point of no return – becomes trapped forever, and any light passing close to it is redirected by the black hole’s intense gravity. Together, these effects produce a “shadow” about twice the size of the black hole’s actual event horizon. The animation shows 10 supersized black holes that occupy center stage in their host galaxies, including the Milky Way and M87, scaled by the sizes of their shadows. Starting near the Sun, the camera steadily pulls back to compare ever-larger black holes to different structures in our solar system. First up is 1601+3113, a dwarf galaxy hosting a black hole packed with the mass of 100,000 Suns. The matter is so compressed that even the black hole’s shadow is smaller than our Sun. The black hole at the heart of our own galaxy, called Sagittarius A* (pronounced ay-star), boasts the weight of 4.3 million Suns based on long-term tracking of stars in orbit around it. It’s shadow diameter spans about half that of Mercury’s orbit in our solar system. The animation shows two monster black holes in the galaxy known as NGC 7727. Located about 1,600 light-years apart, one weighs 6 million solar masses and the other more than 150 million Suns. Astronomers say the pair will merge within the next 250 million years. At the animation’s larger scale lies M87’s black hole, now with a updated mass of 5.4 billion Suns. Its shadow is so big that even a beam of light – traveling at 670 million mph (1 billion kph) – would take about two and a half days to cross it. The movie ends with TON 618, one of a handful of extremely distant and massive black holes for which astronomers have direct measurements. This behemoth contains more than 60 billion solar masses, and it boasts a shadow so large that a beam of light would take weeks to traverse it. Music credit: "In the Stars" from Universal Production Music Credit: NASA's Goddard Space Flight Center Conceptual Image Lab Lead Producer: Scott Wiessinger (KBRwyle) Lead Animator: Krystofer Kim (KBRwyle) Lead Science writer: Francis Reddy (University of Maryland College Park) Visualizer: Jeremy Schnittman (NASA/GSFC) Producer: Sophia Roberts (AIMM) Scientist: Jeremy Schnittman (NASA/GSFC)

From year to year, the moon never seems to change. Craters and other formations appear to be permanent now, but the moon didn't always look like this. Thanks to NASA's Lunar Reconnaissance Orbiter, we now have a better look at some of the moon's history. Learn more in this video!