All articles tagged with #planetary collision
Astronomers observe what appears to be a cataclysmic collision between two distant planets around Gaia20ehk, creating a hot debris cloud that could mirror the Moon-forming event that shaped Earth and offers new insights into planet formation and astrobiology.
Astronomers reexamining archival data of the star Gaia20ehk, about 11,000 light-years away, detected dips in brightness caused by debris from a collision between two planets. Infrared light spikes indicated hot dust from the crash, a rare event that may resemble the collision that formed Earth and the Moon and offer new insights into how planetary systems assemble elsewhere in the galaxy.
Astronomers observed a rare planetary smash around Gaia20ehk, about 11,000 light-years away, inferred from dips in visible light paired with a surge in infrared as a hot debris cloud occludes the star—providing a rare real-time glimpse of a planet-formation catastrophe similar to how Earth's Moon formed.
Astronomers watching the Sun-like star Gaia20ehk (about 11,000 light-years away) saw dips in visible light that coincided with infrared brightening, suggesting hot debris from a collision between two planets. The team attributes the phenomenon to a catastrophic planetary collision producing debris and heat, a rare event detected thanks to decades of data and potentially observable by the Rubin Observatory in its upcoming survey.
Astronomers have captured signs of a catastrophic collision between two planets orbiting Gaia20ehk, a sunlike star roughly 11,000 light-years away; the event, inferred from dips in visible light and a surge in infrared emission, suggests a planet-on-planet smash and may mirror the giant impact that formed Earth’s Moon, providing a rare look at planet formation and hinting Rubin Observatory could find more such events in the next decade.
Astronomers analyzing Gaia20ehk, a sun-like star about 11,000 light-years away, observed erratic dimming in visible light with a simultaneous infrared brightening, consistent with a violent collision between two planets that produced hot dust and debris; the event may resemble the Earth–Moon formation, and Rubin Observatory surveys could reveal many more such collisions to illuminate planetary system evolution.
Recent research suggests Mercury's unusual core size may be the result of a grazing collision with a similar-mass body, rather than a rare impact with a much larger object, providing a more plausible explanation for its internal structure.
A study suggests that passing stars could cause significant orbital instability in our solar system over the next four billion years, increasing the risk of planets like Mercury, Mars, and even Earth being ejected or colliding with the sun.
A new study warns that passing stars could destabilize the solar system over the next 5 billion years, increasing the risk of planetary collisions or Earth being flung into deep space, with Mercury and Pluto most at risk of ejection.
Researchers believe that a cataclysmic collision with a planetary body early in Pluto's history created the distinctive heart-shaped feature on its surface, known as Tombaugh Regio. The impact formed a deep basin called Sputnik Planitia, which is home to much of Pluto's nitrogen ice. The collision likely involved a planetary body about 435 miles in diameter and resulted in a teardrop shape due to the frigidity of Pluto's core and the impact's relatively low velocity. This new theory sheds light on how Pluto formed and could provide insights into its mysterious origins on the edge of the solar system.
An international team of astrophysicists has solved the mystery of Pluto's heart-shaped feature, attributing it to a giant and slow oblique-angle impact with a planetary body over 400 miles in diameter. The impact formed Sputnik Planitia, a region predominantly filled with nitrogen ice, and the study suggests that Pluto's inner structure is different from previous assumptions, indicating no subsurface ocean. The findings shed new light on Pluto's early history and offer a novel origin hypothesis for its unique surface feature.
A new study suggests that the heart-shaped formation on Pluto's surface, known as Tombaugh Regio, was likely formed in a slow-motion, glancing collision with an icy rock wider than Kansas is long. Using computer simulations, researchers determined that the impact likely originated from an oblique collision, leading to its elongated shape, and did not result in the melting of Pluto's icy core. The study also suggests that Pluto's heart does not require a subsurface ocean to explain its position near the equator.
The remains of a planet called Theia, which collided with Earth billions of years ago, are believed to be buried near the Earth's core, forming Large Low-Velocity Provinces (LLVPs) in the mantle. These LLVPs are denser than the surrounding material and are thought to have resulted from the collision, which also created the Moon. Recent studies have used seismic wave measurements and simulations to confirm that the LLVPs are remnants of Theia, and researchers are now investigating their impact on Earth's early evolution.
Scientists propose that the Earth's mantle contains two extra-dense blobs, known as large low-velocity provinces (LLVPs), which may have been leftover from a collision between Earth and a protoplanet called Theia 4.5 billion years ago. Seismic wave behavior suggests that these blobs are compositionally different and made of denser material than the surrounding mantle. Simulations suggest that during the collision, molten material from Theia mixed with the Earth's upper liquid layer, while denser solid material sank and embedded itself in the solid layer below. Further research will involve comparing rock samples from the Earth's mantle with samples from the Moon to support this hypothesis.
Researchers have made intriguing discoveries in various scientific fields. A study suggests that starfish lack torso and tail sections, challenging previous assumptions about their anatomy. Another study proposes that the Earth's moon may contain material from the collision with a Mars-sized object called Theia, which sank into the Earth's mantle. Scientists are also testing wearable devices that vibrate to provide spatial orientation cues for astronauts in microgravity environments. Additionally, researchers have found that rats can imagine distant locations, as demonstrated through brain-computer interface experiments.