Astronomers have reported their most precise late-universe measurement of cosmic expansion so far, and it again supports the Hubble tension. Using several independent distance indicators—Cepheid stars, red giant stars, and supernovae—the H0 Distance Network measured a Hubble constant of 73.5 km/s/Mpc. That agrees with previous late-universe measurements but remains well above the ~67 km/s/Mpc value inferred from early-universe observations of the Cosmic Microwave Background within the standard cosmological model. The key point is that the new result has less than 1% uncertainty and remains stable even when individual methods are removed. That makes it increasingly difficult to blame the discrepancy on observational error alone. If confirmed by future observatories such as the Nancy Grace Roman Space Telescope, this tension could signal missing physics in our current model of the universe, including new particles, unexpected dark energy behavior, or modifications to gravity. Follow for the next clue on whethe

Does the Hubble tension mean new physics, or are we still missing something in our measurements? Made by shorts.wixee.ai

New research suggests dwarf galaxies may not be random collections of stars and dark matter after all. Simulations indicate that dark subhaloes—small, invisible clumps of dark matter—can gradually heat stellar motions through repeated gravitational nudges, pushing stars into wider orbits. Over time, both isolated dwarf galaxies and those near larger hosts may move toward a common stable structure, with tidal effects accelerating the process. This may offer a possible explanation for the cusp-core problem and a new way to understand how dark matter shapes galaxies. Follow for more cosmic mysteries made visible. #dwarfgalaxies #darkmatter #cosmology #astrophysics #space #galaxies #science #milkyway #simulation #physics

Could dark matter be steering dwarf galaxies toward the same fate? Made by shorts.wixee.ai

Scientists used the James Webb Space Telescope and ALMA to study CRISTAL-02, a galaxy from just 1 billion years after the Big Bang. They found intense star formation, but also a massive outflow of gas likely driven by supernovas. That matters because gas is the raw material for future stars. Right now, the galaxy appears to be losing gas about twice as fast as it is forming stars. If that trend holds, star formation could slow dramatically within around 50 million years. The result may help explain why some massive galaxies in the young Universe became inactive earlier than expected. Follow for more cosmic discoveries that change how we see the Universe. #space #astronomy #jameswebb #alma #galaxies #earlyuniverse #cosmology #scienceupdate #starbirth #supernova

A galaxy just 1 billion years after the Big Bang may burn through its star-making fuel in only ~50 million years. Made by shorts.wixee.ai

During precautionary sheltering inside a docked SpaceX Dragon spacecraft, NASA astronaut Jessica Meir captured extraordinary auroras over Earth from the ISS. The crew was taking cover during repair work related to an air leak in a Russian station section. At the same time, charged particles from a recent solar event were interacting with Earth’s magnetic field, creating vivid green ribbons in the atmosphere. The result was a rare scene: a safety procedure unfolding alongside one of the year’s most spectacular space views. #nasa #jessicameir #iss #spacex #dragon #aurora #solarstorm #spaceupdates #earthfromspace #orbit

Would you want to see Earth’s auroras from orbit? Made by shorts.wixee.ai

In 1977, the Big Ear radio telescope detected a powerful signal that lasted 72 seconds and came from the direction of Sagittarius. It appeared near the 1420 MHz hydrogen line, a frequency often discussed in the search for extraterrestrial intelligence. The signal was unusually strong, narrow in frequency, and never repeated. Since then, scientists have examined possible causes including radio interference, comets, hydrogen clouds, and extraterrestrial technology. None has fully accounted for all the observations. The telescope is gone, but the data endures—and the Wow! Signal remains one of astronomy’s greatest mysteries. What do you think the signal really was? #wowsignal #astronomy #bigear #seti #spacemystery #radioastronomy #hydrogenline #sagittarius #sciencemystery #cosmicsignal

Do you think the Wow! Signal was natural—or something else? Made by shorts.wixee.ai

On June 10, 2004, NASA’s Spirit rover found important evidence of Mars’ wetter past while exploring Gusev Crater. Rocks there contained sulfur-rich minerals and salts, including magnesium sulfate, which commonly forms in the presence of liquid water. At the time, this became some of the strongest evidence that Mars once had a much wetter environment, helping scientists better understand the planet’s ancient history and its possible past habitability. Follow for more space discoveries that changed how we see the solar system. #mars #spiritrover #nasa #spacediscovery #gusevcrater #wateronmars #ancientmars #science

Spirit helped prove Mars was once wetter than we imagined. Made by shorts.wixee.ai

Astronomers have identified Kipu, a massive superstructure more than 1.3 billion light-years long and with an estimated mass of roughly 200 quadrillion Suns. It is one of the largest known structures in the universe. The name comes from the ancient Incan quipu, since the structure resembles a long thread with branching strands. Beyond its appearance, Kipu matters because the motions of its galaxies may influence measurements of the Hubble constant, which describes the expansion rate of the universe. Despite its immense scale, Kipu remains consistent with the Lambda-CDM model of cosmology. That makes it a powerful natural laboratory for studying dark matter, galaxy evolution, and the large-scale architecture of the cosmos. Follow for more cosmic discoveries that change how we see the universe. #space #astronomy #cosmology #universe #kipu #galaxies #hubbleconstant #darkmatter #astrophysics #science

Spirit helped prove Mars was once wetter than we imagined. Made by shorts.wixee.ai

Launched on June 7, 1983, Venera 16 set out to explore a planet no camera could properly see. After reaching Venus, it spent more than eight months in orbit alongside Venera 15. Instead of relying on visible-light imaging, the twin spacecraft used radar to penetrate Venus’s dense cloud cover and map the terrain below. Together, they surveyed about 25 to 30% of the planet and produced the first detailed radar atlas of Venus, marking a major milestone in planetary exploration. Follow for more space missions that changed what humanity could see. #venus #venera16 #venera15 #spacemissions #spacehistory #planetaryscience #radar #solarsystem #astronomy #sovietspaceprogram

Radar, not cameras, revealed Venus’s hidden surface. 🌍➡️♀️. Made by shorts.wixee.ai

SKA will combine more than 130,000 antennas in Australia and 197 dish antennas in South Africa into the largest radio telescope project ever built. Spanning thousands of kilometers, this observatory is designed to capture faint signals from the early Universe and process immense volumes of data with advanced computing systems. Scientists hope it will deepen our understanding of the first stars, galaxies, black holes, dark matter, dark energy, and fast radio bursts. First scientific observations are expected around 2027. #ska #radiotelescope #astronomy #spacescience #earlyuniverse #bigbang #darkmatter #darkenergy #blackholes #scienceupdate

The Universe has been whispering for billions of years. SKA is how we finally listen. Made by shorts.wixee.ai

In 1959, Luna 3 became the first spacecraft to photograph the Moon’s far side, showing humanity a hemisphere no one had ever seen. The probe used film, developed it automatically onboard, scanned the images, and transmitted them to Earth across nearly 480,000 kilometers. Though blurry by modern standards, the pictures revealed a far side with fewer dark maria and many more craters. The mission created the first map of the Moon’s hidden hemisphere and helped open the age of robotic planetary exploration. Follow for more forgotten space firsts that changed what humanity could see. #luna3 #moon #farsideofthemoon #spacehistory #sovietspaceprogram #lunarmapping #astronomy #sciencehistory #roboticspacecraft #spacefirsts

Imagine seeing the Moon’s hidden side for the first time. Made by shorts.wixee.ai

The Rosalind Franklin rover is designed to explore Oxia Planum, a region on Mars filled with ancient sedimentary rocks and clay-rich deposits linked to past liquid water. What makes this mission especially compelling is its drill, which can reach up to two meters below the surface. That depth may allow scientists to study material protected from radiation for billions of years and look for possible biosignatures from ancient microbial life, if any were preserved. #mars #rosalindfranklinrover #spacenews #astrobiology #exomars #oxiaplanum #marsscience #ancientlife #redplanet #discovery