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#Charon, discovered #OTD 6-22-1978, has one of the most massive scars in the Solar System! Long ago Charon's subsurface ocean froze & expanded, slowly ripping apart its icy shell and leaving a crack more than 1000 miles long (1600 km).😮#Space

Another first for #NASA New Horizons, now published as a peer reviewed research paper And an TRULY ULTRA COOL one, led by our own Tod R. Lauer . arxiv.org/abs/2506.21666 Reposts please.

Alan Stern Tod R. Lauer So wonderfully scifi from New Horizons. Someone in the future is checking the star charts, perhaps when revived from suspended animation, to ascertain their spacecraft's position in interstellar space. Love it!

New Horizons is so far away that the nearest stars have shifted markedly from where we see them on Earth. With NH-based positions for two stars alone we can figure out where the spacecraft is. This technique would be used on interstellar voyages. arxiv.org/abs/2506.21666

One of the many signs at the NASA HQ budget protest.

When you see Earth as a single, delicate curve, it transforms you. On June 29, Blue Origin successfully completed its 13th human spaceflight and the 33rd flight for the New Shepard program.

“…the first time any method of interstellar navigation has been demonstrated for a spacecraft on an interstellar trajectory.” Congrats @todlauer et al arxiv.org/abs/2506.21666

Interstellar navigation on the fly So cool that spacecraft shoot the stars like ancient mariners

One last bit on New Horizons making the first-ever interstellar navigation by any spacecraft. Here's an NPR interview on it, done today with lead author and interstellar navigation experiment mastermind Tod R. Lauer of the #NASA New Horizons team. npr.org/2025/07/01/nx-…

Today we hit the exact midpoint of the year. And from today forward, 2050 will be closer in time than the year 2000.

Comincia l'era dei viaggi interstellari: New Horizon è la prima astronave a usare solamente le stelle per orientarsi nello spazio

Welcome, stranger

Happy 90th Birthday to Jack Schmitt! Lunar Module Pilot of Apollo 17 - one of only 12 men to walk on the Moon, one of just four still with us. Created from multiple frames of 16mm film, as featured in Apollo Remastered, here he is inside the LM on the way to the Moon. Dec 9, '72.

Alan Stern Tod R. Lauer New Horizons' star-based navigation is revolutionary—autonomy in deep space starts here. What a leap for interplanetary exploration!

Comet C/2024 G3 Atlas, photographed ~235 million miles away from the International Space Station, framed by Crew 8 Dragon and Canada arm.

The bright spot in the center of this image is Anthe, a 1.8-km-wide moon orbiting Saturn between Mimas and Enceladus. It travels inside its own partial ring: the Anthe Ring Arc, created by meteorite impacts. This image was captured with Cassini 17 years ago on July 3, 2008.

NASA Astronaut on ISS caught this sprite over Mexico and the U.S., this morning. Sprites are TLEs or Transient Luminous Events, that happen above the clouds and are triggered by intense electrical activity in the thunderstorms below. We have a great view above the clouds, so

📷'6:40am, 14 July, 2015: New Horizons science team first look at Pluto' Fast forward to 2025 --10-year anniversary-- news about mission aren't good. Many NASA science missions will no longer be allowed to continue due to budgetary cuts. “[...]tragically misguided.” Alan Stern

This is how Jupiter has been protecting Earth since billions of years!

The #LucyMission team has released new images from its flyby of asteroid Donaldjohanson, a rough, cratered, peanut-shaped relic of the early solar system. This successful pass was a dress rehearsal for Lucy’s big mission: visiting the Jupiter Trojans. go.nasa.gov/40yncKI