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Using data that's three decades old, NASA scientists say they've figured out what happens to Venus' heat when it's lost to space — and discovered that the planet's surface may be "squishy" enough for it to be hemorrhaging its internal warmth...This Venusian discovery stems from astronomers trying to understand the planet's surface, which unlike Earth does not have tectonic plates to explain where its heat goes.

Our Solar System is a pretty busy place. There are millions of objects moving around – everything from planets, to moons, to comets, and asteroids. And each year we're discovering more and more objects (usually small asteroids or speedy comets) that call the Solar System home. Astronomers had found all eight of the main planets by 1846. But that doesn't stop us from looking for more. In the past 100 years, we've found smaller distant bodies we call dwarf planets, which is what we now classify Pluto as. The discovery of some of these dwarf planets has given us reason...

an illustration of the boundaries of the solar system. The planetary system sits inside a glowing bubble, with a large blue bubble wrapped around it. bright lights resembling comets, possibly representative of cosmic rays, are unable to penetrate An illustration showing the Solar System inside the heliosphere, with the termination shock and heliopause represented by two bubbles, one inside the other. (NASA) The bubble of space encasing the Solar System might be wrinkled, at least sometimes. Data from a spacecraft orbiting Earth has revealed ripple structures in the termination shock and heliopause: shifting regions of space that mark one of...

The Voyager 2 spacecraft is one of the testaments to human ingenuity! More than four decades after launch, the spacecraft continues to function, even in the harshest imaginable condition of deep space! Despite being billions of miles away, the tenacious spacecraft continues to send back amazing and even terrifying discoveries to the mission controllers on earth! One of the discoveries was a huge wall of fire when Voyager 2 crossed the boundary of our solar system! What happens at this boundary, and how do the events at this boundary affect us on the earth? Join us as we dive into...

Explanation: This 180 degree panoramic night skyscape captures our Milky Way Galaxy as it arcs above the horizon on a winter's night in August. Near midnight, the galactic center is close to the zenith with the clear waters of Lake Traful, Neuquen, Argentina, South America, planet Earth below. Zodiacal light, dust reflected sunlight along the Solar System's ecliptic plane, is also visible in the region's very dark night sky. The faint band of light reaches up from the distant snowy peaks toward the galaxy's center. Follow the arc of the Milky Way to the left to find the southern hemisphere...

It has been a busy time for solar activity. Back in March of 2022, Earth was hit by separate geomagnetic storms, according to government weather agencies in the U.S. and the U.K. Though the geomagnetic storms likely didn't cause any harm, they brought into focus the potential harm that could come from more powerful storms in the future. Then earlier this month, a G1-class geomagnetic storm hit the Earth, causing bright auroras over Canada. The only problem is that nobody saw this storm coming until it was quite late. Five days ago, a giant sunspot and filaments on the solar...

A close up of one of the stalagmites analyzed in the study. Credit: Jud Partin When Georgia Tech Assistant Professor Kim Cobb and graduate student Jud Partin wanted to understand the mechanisms that drove the abrupt climate change events that occurred thousands of years ago, they didn't drill for ice cores from the glaciers of Greenland or the icy plains of Antarctica, as is customary for paleoclimatolgists. Instead, they went underground. Growing inside the caves of the tropical Pacific island of Borneo are some of the keys to understanding how the Earth's climate suddenly changed - several times -...

Explanation: Why would the surface of Titan light up with a blinding flash? The reason: a sunglint from liquid seas. Saturn's moon Titan has numerous smooth lakes of methane that, when the angle is right, reflect sunlight as if they were mirrors. Pictured here in false-color, the robotic Cassini spacecraft that orbited Saturn from 2004 to 2017 imaged the cloud-covered Titan in 2014 in different bands of cloud-piercing infrared light. This specular reflection was so bright it saturated one of Cassini's infrared cameras. Although the sunglint was annoying -- it was also useful. The reflecting regions confirm that northern Titan...

LAUSANNE, Switzerland (AP) — The final frontier has rarely seemed closer than this — at least virtually. Researchers at one of Switzerland’s top universities are releasing open-source beta software on Tuesday that allows for virtual visits through the cosmos including up to the International Space Station, past the Moon, Saturn or exoplanets, over galaxies and well beyond.... ...VIRUP is accessible to everyone for free — though it does require at least a computer and is best visualized with VR equipment or 3D capabilities.... ...To be sure, VR games and representations already exist...But the EPFL team says VIRUP goes much farther...

Summertime means it’s time to play ball! But what would it be like to play ball on various locations across our Solar System? Planetary scientist Dr. James O’Donoghue has put together a fun animation of how quickly an object falls on to the surfaces of places like the Sun, Earth, Ceres, Jupiter, the Moon, and Pluto. The animation shows a ball dropping from 1 kilometer to the surface of each object, assuming no air resistance. You can compare, for example, that it takes 2.7 seconds for a ball to drop that distance on the Sun, while it takes 14.3 seconds...

A comet unlike any other in recorded history is on a trajectory to zip through the inner solar system in less than a decade, but like most space rocks that make the news, it isn’t anything to lose sleep over. Comet 2014 UN271 was observed during a mission called the Dark Energy Survey back in 2014, but skywatchers didn’t realize that the data gathered was showing a comet until mid-June of this year. Pedro Bernardelli and Gary Bernstein were the two people who made this realization, giving Comet 2014 UN271 a name that rolls off the tongue a bit easier:...

Astronomers have never directly seen the Oort Cloud and the most distant spacecraft ever launched by humankind – Voyager 1 – is not due to get there for another 300 years. But new research and upcoming space missions are now starting to reveal some of its secrets. The Oort Cloud was first predicted by Jan Oort in 1950 to explain the existence of comets like Neowise. Unlike short-period comets, which usually take less than 200 years to orbit the Sun and come from an icy disk beyond Neptune called the Kuiper Belt, the origin of those with much longer orbits...

Radioactive elements synthesized in massive stars are ejected into space via stellar winds and supernova explosions. Our Solar System moves through the interstellar medium and collects these extrasolar products. One such product is iron-60. Because it is not naturally produced on Earth, the presence of this radioactive isotope is a sensitive indicator of supernova explosions within the last few million years. Australian National University’s Dr. Anton Wallner and colleagues previously found traces of iron-60 at about 2.6 million years ago, and possibly another at around 6 million years ago, suggesting our planet had traveled through fallout clouds from nearby supernovae....

NASA’s Juno mission captured this look at the southern hemisphere of Jupiter on Feb. 17, 2020, during the spacecraft’s most recent close approach to the giant planet. Not only is Jupiter the largest planet orbiting the Sun, it contains more than twice the amount of material of all other objects in the solar system combined — including all the planets, moons, asteroids and comets. In composition, Jupiter resembles a star, and scientists estimate that if it had been at least 80 times more massive at its formation, it could have become a type of star called a red dwarf rather...

Billions of years ago, something slammed into the dark side of the moon and carved out a very, very large hole. Stretching 1,550 miles (2,500 kilometers) wide and 8 miles (13 km) deep, the South Pole-Aitken basin... For decades, researchers have suspected that the gargantuan basin was created by a head-on collision with a very large, very fast meteor. Such an impact would have ripped the moon's crust apart and scattered chunks of lunar mantle across the crater's surface, providing a rare glimpse at what the moon is really made of. ... Now, however... After analyzing the minerals in six...

While searching for the source of methane on Saturn’s large moon Titan, researchers found a completely unexpected corridor of methane ice wrapping nearly halfway around the moon. Three orientations of Titan’s globe. The icy corridor is mapped in blue. Image via Caitlin Griffith/UA Lunar and Planetary Laboratory.A research team has discovered huge ice feature on Titan while trying to understand where Saturn’s largest moon gets all of its methane. Like Earth, Titan has rain, seas and a surface of eroding organic material. However, on Titan it is methane, not water, that makes up the raindrops and fills the lakes.A team...

Astronomers using the Hubble Space telescope have taken a series of images featuring the fluttering auroras at the north pole of Saturn. The observations were taken in ultraviolet light and the resulting images provide astronomers with the most comprehensive picture so far of Saturn’s northern aurora...Because the atmosphere of each of the four outer planets in the Solar System is – unlike the Earth – dominated by hydrogen, Saturn’s auroras can only be seen in ultraviolet wavelengths

The collision with Uranus of a massive object twice the size of Earth that caused the planet's unusual spin, from a high-resolution simulation using over ten million particles, coloured by their internal energy. Credit: Jacob Kegerreis/Durham University ___________________________________________________________________________ Uranus was hit by a massive object roughly twice the size of Earth that caused the planet to tilt and could explain its freezing temperatures, according to new research. Astronomers at Durham University, UK, led an international team of experts to investigate how Uranus came to be tilted on its side and what consequences a giant impact would have had on the...

The Hypatia stone, as it is known, is not only extraterrestrial in origin. It contains micro-mineral compounds not known to occur anywhere on Earth, not found in any other meteorites, and not known to occur anywhere in the Solar System. It's a discovery that raises some questions about the formation of the Solar System. Subsequent analysis revealed that the diamond-filled stone was not from any known comet or meteorite - its combined features were unique among known extraterrestrial materials. One hypothesis proposed that it might be a fragment of comet nucleus, shocked on impact, and another found that it was...

Sorry for the Vanity, but I was on an Astronomy Ping List and haven't seen any pictures in a good, long while. Is it still active?