Lucas Barcat

🇧🇷🇺🇸 O porta-aviões USS Nimitz, da Marinha dos EUA, chegou ao Rio de Janeiro para participar de exercícios aeronavais em conjunto com a Marinha do Brasil. O mais velho porta-aviões operado pelos EUA está prestes a ser aposentado; pode ser sua última visita ao Brasil.

For 115 years, the #USNavy has commanded both the sea and the sky! 🌊✈️ Happy birthday, @flynavy! #NavalAviation #FlyNavy 🎥 Jimmy Shea

See you in 160,000 years — Comet R3 ☄️ Comet R3 is heading south ☄️ It’s slipping out of view in the Northern Hemisphere Did you capture it recently？ Image credit: Alexandru Docze Camera: ZWO ASI 533MC #CometR3 #Astrophotography #Stargazing #NightSky #ZWO #comet

C/2025 R3 Panstarrs with @Seestar_astro S30 Pro! I really recommend this tutorial: ttps://youtu.be/tsfxLVrlOuw?si=cMeZK8zIvDyvCLbig

@Space_Station Passing in front of the Orion Nebula with Seestar S30 Pro in a bright city! 😅🔭 @Seestar_astro Any tutorials for ISS? I'm accepting! haha Jundiaí - SP, Brazil @issfanclub #seestar #iss #space #telescope

Plus de 12.000 photos (!!) prises par les astronautes d'Artemis II sont disponibles en téléchargement en plein format (8000x5000 pixels). Beaucoup d'images jamais vues à ce jour, dont certaines à couper le souffle et d'autres complètement ratées. Lien dans le tweet suivant.

artemis II crew x earth 🌎🫶🏻

Science communicator Hank Green launched a specialized website that organizes every publicly released photo from the #ArtemisII mission into an interactive, live timeline. Located at artemistimeline(dot)com, the site syncs each image with the crew's official mission schedule and the real-time position of the Orion spacecraft during its 10 day journey around the Moon. By utilizing EXIF metadata from NASA's Flickr archives and trajectory data from public APIs, the platform allows users to see exactly where the crew was when a specific photograph was captured. Green utilized AI tools to assist with the massive data correlation required to align thousands of images with the spacecraft's orbital path. Source: artemistimeline.com

Full moon in bloom 🌕🌸 Look up tonight to see the first full moon of May, the Flower Moon, in the night sky! Where will you be moongazing from?

M8 - Lagoon Nebula with @Seestar_astro S30 Pro 🔭 Bortle 7 - 400 x 10s

Comet C/2025 R3 PANSTARRS folks! Dust poor but plasma rich! Beautiful solar activity from the Sun saying "hello!" as well! We live in a plasma universe!

Wiecie, co jest najlepsze w astrofotografii? To, że przy dobrych warunkach i przyzwoitym sprzęcie można ze swojego podwórka uchwycić coś absolutnie nomen omen kosmicznego — dżet materii wyrzucany z okolic supermasywnej czarnej dziury w centrum galaktyki Messier 87. Dla skali, ażeby uchwycić taki jet: to trochę tak, jakby spróbować dostrzec szczegół na drugim końcu planety — tylko że zamiast kilometrów mamy miliony lat świetlnych. Ten dżet rzeczywiście jest związany z czarną dziurą — powstaje w jej najbliższym otoczeniu (w dysku akrecyjnym i polach magnetycznych wokół niej), choć sama czarna dziura niczego „nie wyrzuca” bezpośrednio. 📏 Fakty: • Odległość: ok. 55 mln lat świetlnych • Długość dżetu: nawet do ~5 tys. lat świetlnych (widoczna część) Sprzęt: RC 10" 🔭+ kamerka ToupTek 2600 ATR C. Zdjęcie po prawej dla porównania pochodzi z teleskopu Hubble/NASA. #space #cosmos #deepSky #M87 #blackhole

Astrophotography, from raw to final processing

Celebrating 36 years of discovery with the Hubble Space Telescope 🔭 Collected on April 23, 2026, by one of Vantor's WorldView Legion satellites, this remarkable non-Earth image showcases Hubble from just 61.8 km away—an incredible perspective of one of humanity’s most iconic scientific instruments. With a space sample distance of 4.0 cm, Hubble’s signature cylindrical body, gleaming thermal shielding, and extended solar arrays are clearly visible, along with the open aperture door at the front of the telescope. For over three decades, Hubble has expanded our understanding of the universe—delivering breathtaking imagery and groundbreaking science that continue to inspire. Proud to support the technologies and teams that make moments like this possible.

The planet can spell your name – literally. 🔤🌍 This Earth Day, see your name written in landscapes captured by Landsat: go.nasa.gov/4ak4Cdu

For the first time in decades, three aircraft carriers are operating in the Middle East at the same time. Accompanied by their carrier air wings, the USS Abraham Lincoln (CVN 72), USS Gerald R. Ford (CVN 78) and USS George H.W. Bush (CVN 77) include over 200 aircraft and 15,000 Sailors and Marines.

It's our home. This Earth Day, see our planet as our Artemis II astronauts saw it with these new images from the mission.

The Nancy Grace Roman Space Telescope is in final preparations for an early September launch, eight months AHEAD of schedule and UNDER budget. This milestone is the result of more than a decade of dedication and millions of hours of work by NASA and our industry partners. Their commitment is what’s making this moment possible and helping drive Gold Standard Science. Roman will help answer some of the biggest questions in science, investigating dark matter, dark energy, and the structure of the universe. Its images will be so large and detailed, there isn’t a screen in existence big enough to display them. This is just the beginning.

This is an image of Comet C/2025 R3 (PanSTARRS) that I took from the Cupola on the @Space_Station. I was originally taking some photos looking for meteors from the Lyrid and saw the tail of the comet! It was almost blocked in my view by the base of the Canadarm2 robotic arm, but I was just able to get a photo of it. This comet was discovered in late 2025 by the Pan-STARRS project, which uses two telescopes in Hawaii with large fields of view to take large images of the sky every night and then compares them to find any objects that might be new or moving. This comet made its closest approach to the sun on April 19th. Z9/200mm

☄️ C/2025 R3 (PANSTARRS): last views from the Northern Hemisphere before perihelion ✨ 📷 Josh Dury