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4Astronomy is a search engine built for people who look up. We combine multiple indexes, curated astronomy sources, and AI systems to return results tailored to astronomy topics. Use 4Astronomy to find observing guides, research papers, image archives, mission information, community resources, and products relevant to amateur and professional astronomy. Part of the 4SEARCH network of topic specific search engines.
Latest Articles
When is the full Moon in September 2026? What the Harvest Moon brings for US skywatchers
9+ hour, 15+ min ago (324+ words) If you have been waiting for September's full Moon, also known as the Harvest Moon, you will not have to wait much longer. The Harvest Moon reaches peak illumination on September 26, 2026, at 12:49 p.m. EDT, according to The Old Farmer's Almanac. The…...
Moon phase today: What the Moon will look like on September 13
3+ hour, 28+ min ago (228+ words) Mashable SEA Moon phase today: What the Moon will look like on September 13 The Moon may be hard to spot right now, but that won't last for long. As the new lunar cycle gets underway, a little more of it…...
China could beat Nasa to return first Mars samples by 2031
1+ hour, 50+ min ago (559+ words) Sunday September 13, 2026 China is aiming to bring about 500 grams of Martian material back to Earth by 2031, potentially beating Nasa in the race to return the first samples from Mars, as the US space agency currently has no clear plan or…...
On 2 August 1971, near the end of Apollo 15’s final moonwalk, David Scott stood before a television camera holding a 1.32-kilogram geological hammer in one hand and a 30-gram falcon feather in the other. He released them together, and in the Moon’s near-vacuum they struck the dust simultaneously—dramatically demonstrating what Galileo had predicted nearly four centuries earlier.
47+ min ago (503+ words) Apollo 15 turned a geological tool and a falcon feather into a televised demonstration of equal gravitational acceleration in the Moon’s near-vacuum....
China ranks second worldwide in space infrastructure construction says new assessment
1+ hour, 45+ min ago (281+ words) Dimsum Daily 13th September 2026 – (Beijing) China has been ranked second globally for the construction of space infrastructure, according to the 2026 Global Space Infrastructure Assessment unveiled over the weekend at the China International Fair for Trade in Services. The report places the…...
NASA's Hubble Space Telescope reveals giant atmospheric wave around Saturn's South Pole
12+ hour, 24+ min ago (435+ words) Recent observations discovered by NASA's Hubble Space Telescope revealed a giant, evolving, 10-sided atmospheric wave encircling Saturn's South Pole. Nasa said this discovery, called a decagon, is the first time a large regular-sided jet pattern has ever been seen in…...
Scientists hope to build houses on Mars using yeast and gelatin
2+ hour, 41+ min ago (652+ words) Living building material can be 3D printed under simulated Martian conditions at 30°C and 0.01 atm (left). A microscopic view reveals the materials porous structure with polymers and engineered yeast highlighted in yellow (right). (Ning Liu via SWNS) Scientists plan to 3D print…...
T??rkiye just joined the race to put boots on the Moon
1+ hour, 41+ min ago (664+ words) Long before a Turkish flag ever soared into orbit, the dream was quietly taking shape, gathering strength through decades of ground stations, satellite designs, and patient determination. Türkiye’s journey to the Moon did not start at NASA headquarters on August…...
New simulations suggest the moon formed just 5 hours after Earth slammed into protoplanet Theia
1+ hour, 53+ min ago (552+ words) Earth's moon may have formed far faster than scientists once believed, with new simulations suggesting it came together in as little as five hours after a catastrophic collision. That unexpectedly short timeline could reshape researchers' understanding of one of the…...
DEEP Robotics Tests Lynx M20 All Terrain Robot in Mars Like Conditions
6+ hour, 26+ min ago (147+ words) Technetbook DEEP Robotics Tests Lynx M20 All Terrain Robot in Mars Like Conditions DEEP Robotics has demonstrated its Lynx M20 industrial robot in harsh terrain resembling the Martian surface. The 4 legged machine uses wheels on its limbs to combine rolling and stepping…...