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

Could Mars still be hiding ancient biosignatures underground? Made by shorts.wixee.ai

On June 16, 2012, China launched Shenzhou-9 from the Jiuquan Satellite Launch Center. Among the crew was Liu Yang, who became the first Chinese woman in space. The date aligned exactly 49 years after Valentina Tereshkova became the world’s first woman in space. Shenzhou-9 also carried out key docking operations with Tiangong-1, an essential step toward the permanent Tiangong space station now in orbit. Follow for more archival moments from space history. #spacehistory #chinaspace #liuyang #shenzhou9 #tiangong1 #womeninspace #valentinatereshkova #humanspaceflight #orbitaldocking #archivehistory

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

Meet Comet Bernardinelli-Bernstein (C/2014 UN271), the largest comet ever observed by astronomers. Its nucleus is estimated to be about 150 kilometers (93 miles) wide, an extraordinary size that initially made scientists wonder if it could be a dwarf planet. There is no danger to Earth. Its closest approach will happen in 2031, but it will remain far beyond Earth’s orbit and never travel inside Saturn’s orbit. While it is not expected to be visible to the naked eye, astronomers think binoculars may be enough to spot it. Follow for more space discoveries that sound unreal but are true. #space #astronomy #comet #bernardinellibernstein #c2014un271 #solarsystem #spacescience #stargazing #cosmos #science

Biggest comet ever observed — and still no threat to Earth. Would you try spotting it with binoculars? Made by shorts.wixee.ai

In roughly 1.35 million years, Gliese 710 is expected to make a rare close pass by the Sun, reaching about 0.21 light-years away and moving through the inner Oort Cloud. This is not expected to endanger Earth or the planets. But it could gravitationally disturb many icy bodies in that distant region. Some may be pushed out of the Solar System, while others could shift onto new paths toward the inner Solar System, possibly increasing long-period comet activity in the distant future. A dramatic event on cosmic timescales, but a reassuring one for us. #space #astronomy #gliese710 #oortcloud #solarsystem #comets #stars #science #cosmic #spaceupdate

Would you watch a sky where another star shines almost as bright as Jupiter? Made by shorts.wixee.ai

A new observation from the James Webb Space Telescope is adding fresh evidence to one of cosmology’s biggest mysteries. Researchers studied Abell 2744-QSO1, an extremely distant object seen only 700 million years after the Big Bang. They found that its host galaxy appears modest in mass, while its central black hole is astonishingly large by comparison. This raises the possibility that, at least in some early systems, the black hole formed first and the galaxy grew around it. Scientists are also considering unusual formation paths, including direct gas-cloud collapse or primordial black hole scenarios. It is not the final answer, but it may be one of the clearest clues yet that supermassive black holes helped shape the first galaxies. Follow for more space mysteries with real evidence behind them. #space #astronomy #jwst #blackhole #galaxies #cosmology #earlyuniverse #science #astrophysics #universe