NASA will unveil new images of interstellar comet 3I/ATLAS on Nov. 19. Here's how to watch live

NASA Shares Interstellar Comet 3I/ATLAS Images - YouTube NASA Shares Interstellar Comet 3I/ATLAS Images - YouTube
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NASA will reveal new imagery of the interstellar comet 3I/ATLAS on Wednesday (Nov. 19), and you can watch it live.

A blue ball of light shines between streaks of blueish light from stars in outer space

A Hubble Space Telescope image of the interstellar comet 3I/ATLAS, captured on July 21, 2025, when the comet was 277 million miles (446 million kilometers) from Earth. (Image credit: NASA/ESA/David Jewitt (UCLA)/ Image Processing: Joseph DePasquale (STScI))

The briefing participants are:

  • NASA Associate Administrator Amit Kshatriya
  • Nicky Fox, associate administrator, NASA's Science Mission Directorate
  • Shawn Domagal-Goldman, acting director, NASA's Astrophysics Division
  • Tom Statler, NASA lead scientist for solar system small bodies

Comet 3I/ATLAS was discovered on July 1 of this year by the ATLAS (Asteroid Terrestrial-impact Last Alert System) observatory, which is funded by NASA.

It's the third interstellar comet ever discovered in our solar system, after 1I/'Oumuamua and 2I/Borisov, which were spotted in October 2017 and August 2019, respectively.

On Oct. 29, 3I/ATLAS made its closest approach to the sun, a milestone known as perihelion; it came within about 130 million miles (210 million kilometers) of our star. The new imagery may highlight increased cometary activity caused by this solar passage, though NASA's brief release doesn't tease that possibility.

"Assets within NASA's science missions give the United States the unique capability to observe 3I/ATLAS almost the entire time it passes through our celestial neighborhood, and study — with complementary scientific instruments and from different directions — how the comet behaves," NASA officials said in the statement. "These assets include both spacecraft across the solar system, as well as ground-based observatories."

Comet 3I/ATLAS made its closest approach to Mars on Oct. 3, flying within a mere 19 million miles (30 million km) of the Red Planet. The interstellar interloper won't give Earth nearly that close a shave; it will zoom within about 170 million miles (270 million km) of our planet on Dec. 19.

Mike Wall
Senior Space Writer

Michael Wall is a Senior Space Writer with Space.com and joined the team in 2010. He primarily covers exoplanets, spaceflight and military space, but has been known to dabble in the space art beat. His book about the search for alien life, "Out There," was published on Nov. 13, 2018. Before becoming a science writer, Michael worked as a herpetologist and wildlife biologist. He has a Ph.D. in evolutionary biology from the University of Sydney, Australia, a bachelor's degree from the University of Arizona, and a graduate certificate in science writing from the University of California, Santa Cruz. To find out what his latest project is, you can follow Michael on Twitter.

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