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Discovery of First 'Three-Headed' Asteroid in Solar System

Discovery of First 'Three-Headed' Asteroid in Solar System

Astronomers have captured images of asteroid (44) Nysa, revealing it as the first-known 'trilobate' or three-headed asteroid in our solar system. Located in the main asteroid belt between Mars and Jupiter, Nysa was first observed in 1857, but its unique structure was only recently resolved using the Very Large Telescope and the Large Binocular Telescope. The asteroid, approximately 47 miles in circumference, also has a small moon, S/2026 (44) 1, orbiting it.

Astronomers Discover Potential Starless Galaxies Near M51

Astronomers Discover Potential Starless Galaxies Near M51

Astronomers have identified two potential reionization-limited HI clouds (RELHICs) near the Whirlpool Galaxy (M51). These starless galaxies, also known as optically dark galaxies, are theorized to exist within low-mass dark matter halos that fail to form stars. The discovery was made using the Five-hundred-meter Aperture Spherical Telescope (FAST), which detected two HI clouds, named Cloud N and Cloud S, that meet the criteria for RELHICs. These clouds have a dark matter halo mass of approximately 3.7 billion solar masses and exhibit HI density profiles consistent with theoretical models. The findings suggest that these clouds could be among the few known RELHICs, providing valuable insights into galaxy formation and dark matter distribution.

New Study Sheds Light on Tabby's Star's Mysterious Dimming

New Study Sheds Light on Tabby's Star's Mysterious Dimming

A recent study has provided new insights into the mysterious dimming of Tabby's Star, also known as KIC 8462852. Since 2016, this star has exhibited irregular dimming patterns, sparking various theories, including the possibility of alien megastructures. The study, led by Cristina Madurga-Favieres from the University of Warwick, utilized data from NASA's Transiting Exoplanet Survey Satellite (TESS) to identify a 21-hour symmetric dip in the star's light. This dip suggests the presence of a companion object, possibly a giant planet or brown dwarf, orbiting the star. The study proposes that this companion's gravity could be responsible for the irregular dimming by flinging comets and debris into orbits around the star.

Webb Telescope Reveals Ancient Catastrophe Among Neptune's Moons

Webb Telescope Reveals Ancient Catastrophe Among Neptune's Moons

New findings from NASA's James Webb Space Telescope have uncovered evidence of a catastrophic event in Neptune's past. The research, led by planetary scientist Ryleigh Davis, indicates that Neptune's largest moon, Triton, was captured by the planet's gravity, leading to a series of collisions among Neptune's original moons. This event, occurring billions of years ago, resulted in the formation of Neptune's current inner moons and rings from the debris. The study highlights the presence of clay minerals on these moons, suggesting they originated from a larger ancient world.

SpaceX Rocket Debris Crashes into Moon, Creating New Lunar Crater

SpaceX Rocket Debris Crashes into Moon, Creating New Lunar Crater

A four-tonne piece of a SpaceX Falcon 9 rocket, which has been adrift in space since January 2025, is believed to have unintentionally crashed into the moon. The collision, occurring at a speed of 5,400 mph, was expected to create a new crater on the lunar surface. This event poses no threat to Earth but offers a unique opportunity for scientific research. The rocket segment, part of a mission that launched two commercial lunar landers, was on an uncontrolled trajectory due to a combination of solar activity and gravitational forces. NASA plans to collect data from the impact to enhance understanding of artificial impacts and their implications for lunar exploration.

NASA and SpaceX Track Rocket Part for Lunar Impact Observation

NASA and SpaceX Track Rocket Part for Lunar Impact Observation

NASA, in collaboration with SpaceX, is tracking a Falcon 9 upper stage expected to impact the Moon near the Einstein and Bell craters. The impact, scheduled for August 5, poses no threat to Earth. This event is part of NASA's efforts to collect lunar data and refine space object tracking techniques. The Falcon 9 rocket, launched in January 2025, was part of a mission under NASA's Commercial Lunar Payload Services initiative. The unplanned return to the Moon is due to solar activity and gravitational forces. NASA's Center for Near Earth Object Studies confirmed the impact trajectory, and the agency plans to observe the event using ground-based telescopes and space-based assets.

Perseid Meteor Shower Offers Spectacular Night Sky Viewing

Perseid Meteor Shower Offers Spectacular Night Sky Viewing

Perseid Meteor Shower Offers Spectacular Night Sky Viewing

Total Solar Eclipse on August 12, 2026, to Cast Twilight Across Parts of Europe and North America

Total Solar Eclipse on August 12, 2026, to Cast Twilight Across Parts of Europe and North America

On August 12, 2026, a total solar eclipse will occur, marking the first such event in Europe since 1999. The eclipse will be visible along a narrow path of totality that includes Greenland, Iceland, northern Spain, and the Balearic Islands. During this event, the moon will completely cover the sun, revealing the sun's corona and turning day into twilight along the path of totality. In addition to Europe, parts of the northeastern United States and eastern Canada will experience a partial solar eclipse, where the moon will appear to take a bite out of the sun. The event is expected to attract millions of skywatchers, with live reporting planned from key locations in Greenland and Spain.

NASA's Swift Observatory Detects Rare Black Hole Consuming Star Far from Galactic Center

NASA's Swift Observatory Detects Rare Black Hole Consuming Star Far from Galactic Center

NASA's Neil Gehrels Swift Observatory has observed a supermassive black hole consuming a star far from the center of its galaxy, a rare occurrence as such black holes are typically found at galactic cores. This event, described as an 'orphan' black hole, is significant because it is one of the few confirmed instances of a black hole located at such a distance from a galaxy's center. The discovery was made as part of efforts to identify star-shredding events, which can reveal otherwise invisible supermassive black holes. This particular observation has validated a new technique for detecting these phenomena.

NASA's Hubble Telescope Reveals Andromeda Galaxy's Star Production Slowdown

NASA's Hubble Telescope Reveals Andromeda Galaxy's Star Production Slowdown

NASA's Hubble Space Telescope has provided a detailed analysis of the Andromeda galaxy, revealing a significant slowdown in its star production over the past 500 million years. This finding suggests that the galaxy is naturally winding down after a period of heightened activity. The study, published in The Astrophysical Journal, utilized data from two major Hubble surveys that mapped approximately two-thirds of Andromeda's disk, including around 200 million stars. The research indicates that Andromeda's star formation rate has decreased from one solar mass per year 500 million years ago to just one-fifth of a solar mass each year today. The slowdown is primarily concentrated within a ring about 32,000 light-years from the galaxy's center. The study also explored the potential influence of the companion galaxy M32 on this decline, although evidence remains inconclusive.

Study Estimates 170 Million Black Holes in the Milky Way's 'Galactic Underworld'

Study Estimates 170 Million Black Holes in the Milky Way's 'Galactic Underworld'

A new study has estimated that approximately 170 million stellar-mass black holes exist within the Milky Way, forming a hidden 'Galactic Underworld.' These black holes are remnants of massive stars that have collapsed after exhausting their fusion fuel. The study, which involved simulating the Milky Way's history, predicts the distribution and characteristics of these black holes, providing a framework for future observations. The research suggests that black holes are distributed throughout the galaxy, with one black hole per 6,250 cubic parsecs at the Sun's distance from the galactic center. The findings are currently under peer review.

Rocks from Moon's Far Side Challenge Theories of Early Solar System

Rocks from Moon's Far Side Challenge Theories of Early Solar System

New research based on rocks collected from the Moon's far side suggests that the early Solar System experienced a gradual decline in asteroid impacts rather than a single catastrophic event. This finding challenges the long-held theory of a late heavy bombardment, a period when the inner Solar System was thought to have been bombarded by a sudden surge of impacts. The study, involving analysis of lunar rocks, indicates that the bombardment weakened over billions of years as the Solar System cleared debris. This gradual decline in impacts could reshape scientists' understanding of planetary history, including the conditions that influenced the emergence of life on Earth.