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Alexandre Henrique Lopes Porto

@xandaolp.bsky.social

Analista de Sistemas que gosta de séries. Gosta também de astronomia e tecnologia. No momento fazendo pós-doutorado no LNCC.

2780 Posts85 Follower 65 Folgt

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 16h ago

Pluto in Enhanced Color Image Credit: NASA, Johns Hopkins Univ./APL, Southwest Research Inst. apod.nasa.gov/apod/ap26090...

Pluto is more colorful than we can see. Color data and high-resolution images of our Solar System's most famous dwarf planet, taken by the robotic New Horizons spacecraft during its flyby in 2015 July, have been digitally combined to give an enhanced-color view of this ancient world sporting an unexpectedly young surface. The featured enhanced color image is not only esthetically pretty but scientifically useful, making surface regions of differing chemical composition visually distinct. For example, the light-colored heart-shaped Tombaugh Regio on the lower right is clearly shown here to be divisible into two regions that are geologically different, with the leftmost lobe, Sputnik Planitia, also appearing unusually smooth. After Pluto, New Horizons continued on, shooting past asteroid Arrokoth in 2019 with enough speed to escape our Solar System completely.

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 2d ago

Cat Passed From Home to Home Was Reunited With His Rescue by a Microchip, and Now Holds Hands When Pet www.lovemeow.com/found-microc...

A microchip brought this cat back to the rescue that first loved him.

Truly was adopted as a kitten, then passed from home to home for years until he ended up on a Brooklyn sidewalk. One microchip scan sent him back to the rescue that had loved him all along.

lovemeow.com

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 2d ago

Chasing the Moon's Shadow Image Credit: NASA apod.nasa.gov/apod/ap26090...

Chasing the shadow of a New Moon, NASA’s WB-57F high altitude research aircraft took to the skies off the coast of Iceland on August 12 to observe a total solar eclipse. At 50,000 feet the aircraft was piloted along the precisely determined path of totality to maximize its time in the Moon’s shadow. A suite of high-resolution cameras on board was able to record eclipse data from above the clouds, dust, and atmospheric water vapor that interfere with observations made closer to the ground. This view from the cockpit, taken from an inflight video, captures the solar corona emerging at the beginning of totality. The sky appears dark in the shadow of the Moon. Venus is shining left of center in the video frame, while Jupiter and Mercury are just visible to the right of the eclipsed Sun. But the sky is bright along the distant horizon below, beyond the reach of the Moon's shadow.

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 2d ago

Nanociência une-se aos cristais líquidos para criar materiais multifuncionais Créditos da imagem: Jian Sun a et al. www.inovacaotecnologica.com.br/noticias/not... via @inovacaotecnologica.com.br

Conceito do casamento dos cristais líquidos com a nanociência.

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 2d ago

Última unidade baseada na percepção humana, candela mostra seus limites Créditos da imagem: Shuchen Guan et al. www.inovacaotecnologica.com.br/noticias/not... via @inovacaotecnologica.com.br

Medições confiáveis em larga escala do brilho, como as mostradas na figura, revelaram falhas da técnica fundamental da fotometria.

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 3d ago

Bonded Kittens From a Packed Shelter Now Spend Their Nights Watching True Crime, Unbothered by a Plot Twist www.lovemeow.com/kittens-watc...

These bonded kittens watch true crime with their foster at night.

Pulled from a crowded shelter, bonded siblings Mahi Mahi and Mackerel are thriving in foster care. Their favorite evening ritual: true crime documentaries from the back of the couch.

lovemeow.com

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 3d ago

Nā ʻUhane Māhoe Huki Pū i ke Ola Image Credit: International Gemini Observatory / NOIRLab/NSF/AURA apod.nasa.gov/apod/ap26090...

Nā ʻUhane Māhoe Huki Pū i ke Ola, is the Hawaiian name given to this image of a pair of spiral galaxies locked in a mutual gravitational embrace. Some 200 million light-years distant toward the high flying constellation Pegasus their spectacular, galactic scale merger is captured in sharp detail in the image from the 8.1 meter Gemini North telescope on Maunakea, Hawai‘i. The galaxy pair, known as NGC 7253 and Arp 278, was chosen as a target, researched, and given a Hawaiian name by high school students in the joint Gemini Observatory and University of Hawaiʻi Project Hōkūlani internship program. The name translates to "The Twin Spirits Pulling Together Creating Life". That's both culturally and astronomically appropriate for galaxy collisions that trigger a cosmic maelstrom of star formation from galactic reservoirs of elemental building blocks of life. These merging galaxies are found within a region of Pegasus identified as the Hawaiian navigational constellation Ka Lupe o Kawelo.

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 3d ago

Princípio da equivalência de Einstein é comprovado na escala quântica Crédito da imagem: Or Dobkowski www.inovacaotecnologica.com.br/noticias/not... via @inovacaotecnologica.com.br

À esquerda, a câmara com átomos frios, no centro da qual há uma célula de vidro sob vácuo entre bobinas que produzem campos magnéticos. Os átomos entram na câmara através do orifício visível no centro da superfície amarela (refletora). À direita, o chip sob o qual os átomos são manipulados.

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 3d ago

Luz e escuridão controlam estrutura de material optoeletrônico promissor Crédito da imagem: Flinders University www.inovacaotecnologica.com.br/noticias/not...

Domínios estáveis (nanobolhas) no monocristal ferroelétrico PMN-xPT.

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 3d ago

Eletrodos de bismuto extraem magnésio da água do mar Créditos da imagem: Kim et al. www.inovacaotecnologica.com.br/noticias/not... via @inovacaotecnologica.com.br

Esquema e rendimento da célula eletroquímica de extração de sal de magnésio da água do mar.

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 3d ago

Nova teoria permitirá projetar motores de luz Créditos da imagem: Enrique Sahagún,Scixel/University of Basel www.inovacaotecnologica.com.br/noticias/not... via @inovacaotecnologica.com.br

Um átomo em uma cavidade entre dois espelhos (esquerda) funciona como um motor térmico, no qual a energia é continuamente adicionada e perdida para o ambiente na forma de luz. As flutuações na luz que escapa (centro) são reduzidas (direita) se apenas o átomo, e não a luz, for descrito pela mecânica quântica.

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 4d ago

The Eclipse and the Stork Image Credit & Copyright: Włodzimierz Bubak Text: Cecilia Chirenti (NASA GSFC, UMCP, CRESST II) apod.nasa.gov/apod/ap26090...

How do animals react to a total solar eclipse? The featured image shows a stork roosting on her nest in Poland at a partial phase of the recent total solar eclipse. If you are lucky enough to experience a total eclipse somewhere quiet and close to nature, you may be able to notice unusual daytime animal behaviors. During totality, you may hear nighttime sounds like crickets and frogs and see fireflies. In the dark, most birds are quiet. Thinking that it is time to go to bed, ducks and other waterfowl prepare to sleep on one leg, with their heads turned around and their beaks tucked into their back feathers (they don't really sleep with their heads tucked under one wing). When sunlight returns at the end of totality, songbirds greet the new "morning" with their dawn songs. The crickets and frogs go quiet again. Animals and people resume their lifes, only briefly disturbed by the chance alignment of our Sun and Moon.

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 4d ago

Espaço não é vazio e altera comportamento da luz Créditos da imagem: NASA/Pablo Garcia www.inovacaotecnologica.com.br/noticias/not... via @inovacaotecnologica.com.br

Na presença de um campo magnético extremamente poderoso, um mar de partículas virtuais, como ilustrado na figura, refrata a luz de maneiras específicas, o que agora foi medido pela primeira vez.

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 4d ago

Sabe o efeito na bola de futebol? Ele também acontece no reino quântico Crédito da imagem: PSI www.inovacaotecnologica.com.br/noticias/not... via @inovacaotecnologica.com.br

Ao aplicar efeito em uma bola, como ilustrado na figura, altera-se sua trajetória - um efeito semelhante acaba de ser documentado no mundo quântico.

Panagiotis Xipteras @xipteras.com · 4d ago

🌖 3 Sep 2026: the Moon sits in Taurus, 55% lit, about 371,000 km out. Tonight the terminator cuts straight down the middle. Ptolemaeus, Alphonsus and Arzachel land on the shadow line, Sun barely 5° over their floors. Rises 22:22, worth staying up. #Moonphase

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 5d ago

Two Cats Found Wary of the World and Alone on the Street Are Shy Apart, but Somehow a Team Together www.lovemeow.com/bonded-tonki...

Two shy cats have waited years for a home, and must stay together.

Jagger and Jewell were rescued from the streets and spent years learning to trust. They lean on each other for courage, and they are still hoping for one patient person to take them both.

lovemeow.com

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 5d ago

Robô-peixe pode crescer sem mudanças no projeto Créditos da imagem: Nana Obayashi/NYU www.inovacaotecnologica.com.br/noticias/not... via @inovacaotecnologica.com.br

Foto do peixe robótico, projetado para ser construído em vários tamanhos a partir de um único projeto, tem uma estrutura flexível de fibra de vidro que se estende a partir de uma seção frontal rígida, acionada por motor.

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 5d ago

Solar Eclipses and Culture Image Credit & Copyright: Javier Castro Text: Keighley Rockcliffe (NASA GSFC, UMBC CSST, CRESST II) apod.nasa.gov/apod/ap26090...

Pretend you have never heard of a solar eclipse. The Sun’s behavior has been predictable your whole life. One day, you witness the sky transform as it does in today’s spliced image spanning two hours of the August 12, 2026 solar eclipse. The Sun disappears, leaving behind a bright, empty ring. What would you think had happened? Humans have interpreted eclipses in countless ways throughout history, embedding beliefs about connection, rebirth, or danger into culture. “Eclipse” comes from the Greek word “ékleipsis” meaning “abandonment”. In ancient Greece, the solar eclipse marked the anger of the gods and the Sun abandoning humanity. To the Diné people, this celestial alignment is a time of renewal. Out of respect and to avoid the danger of sunlight, the Diné stay inside until the Sun and Moon separate. The Batammariba people of Benin and Togo believe that the Sun and Moon fight during an eclipse, so the community encourages peace among themselves. Eclipses are an example of the longstanding connection between astronomy and society.

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 5d ago

Baterias à base de água usam íons e prótons simultaneamente Créditos da imagem: Geunchan Park/KAIST www.inovacaotecnologica.com.br/noticias/not... via @inovacaotecnologica.com.br

Como ilustrado na figura, segredo está na ordem de armazenamento dos íons e dos prótons.

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 5d ago

Transistores vivos são criados com bactérias interconectadas Créditos da imagem: Hamid Doosthosseini et al. www.inovacaotecnologica.com.br/noticias/not... via @inovacaotecnologica.com.br

Como mostrado na figura, são de placas de circuito vivas, criadas com bactérias que funcionam como transistores.

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 5d ago

Não é só branco: Tecido roxo expulsa calor do corpo Crédito da imagem: Adelaide University www.inovacaotecnologica.com.br/noticias/not... via @inovacaotecnologica.com.br

Material roxo incorporado no tecido para resfriamento radiativo passivo e gerenciamento térmico pessoal.

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 6d ago

A Plane Lunar Eclipse Image Credit: Paulo Ferreira apod.nasa.gov/apod/ap26090...

Did you need to be on the right side of this airplane to see this eclipse? No. Lunar eclipses are routinely seen from the half of the Earth facing the Moon when the eclipse occurs, making them some of the most commonly witnessed astronomical events. You don't even need any special equipment to see one -- just your unaided eyes. Lunar eclipses are also some of the most photographed astronomical events because, unlike with a solar eclipse, your eyes and camera do not have to look toward the bright Sun. However, considering the featured image taken last week from Portugal, if you were on the left side of that airplane during takeoff, you might have trouble seeing it -- at first. But even then, after takeoff, since lunar eclipses typically last for hours, you might soon be able to safely cross the aisle(s) to see it.

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 6d ago

LoveMeow's Best Special Needs Cat Stories www.lovemeow.com/best-special...

Best Special Needs Cat Stories

Special needs cats ask for something most people have more of than they realize: a little extra patience, a little extra time, and the willingness to meet them exactly where they are. In return, they ...

lovemeow.com

Panagiotis Xipteras @xipteras.com · 6d ago

Over the Atlantic Ocean, you can see the southern constellations Pyxis, Canis Major, Puppis, Pictor and Columba. #nightsky

Panagiotis Xipteras @xipteras.com · 6d ago

Flashback 10.5.2024 The Aurora Maker. #sunspot AR3664.

Panagiotis Xipteras @xipteras.com · 7d ago

5x the reach. 400mm vs 2,000mm. What could it mean? #moonphoto

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 7d ago

Cat Found Wandering Major Street With a Deep Wound on Head Never Stopped Leaning Into Every Hand For Pets www.lovemeow.com/cat-found-in...

Found hurt and alone, this cat never stopped trusting people.

Cashmere was found on the street with a badly injured ear and every reason to give up on people. Instead, he leaned on the rescuers and foster who spent months helping him heal.

lovemeow.com

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · 7d ago

Launch of the Roman Space Telescope Video Credit: NASA apod.nasa.gov/apod/ap26083...

Panagiotis Xipteras @xipteras.com · last wk.

Well begun is half done. --Aristotle #SolarEclipse2026

Alexandre Henrique Lopes Porto @xandaolp.bsky.social · last wk.

M74: A Grand Design Spiral Image Credit: NASA, ESA, and the Hubble Heritage (STScI / AURA)- ESA / Hubble Collaboration Acknowledgment: R. Chandar (U. Toledo) & J. Miller (U. Michigan) apod.nasa.gov/apod/ap26083...