A Northwestern University study discovered that stellar flares could play an important role in a planet's atmospheric evolution and habitability. Flares may drive a new chemical equilibrium in a planet's atmosphere, potentially making it easier to detect signs of life.
Researchers have detected a possible radio signal from the exoplanet in the Tau Boötes system using the Low Frequency Array. The signal suggests that the planet's magnetic field may be contributing to its habitability by shielding its atmosphere from solar wind and cosmic rays.
Astronomers have confirmed an exoplanet, HD 106906 b, with a highly eccentric orbit around its binary star, similar to the hypothetical Planet Nine. The planet's orbit is likely bound, and its presence suggests that distant planets can form within the first tens of millions of years of a star's life.
Astronomers have measured the motion of a massive Jupiter-like planet in an unlikely orbit around a double star, sparking questions about its formation and evolution. The discovery offers evidence that such oddball orbits are possible and may hold clues to the mysterious Planet Nine in our solar system.
A team of scientists discovered ancient zircon minerals in a Martian meteorite that date back to 4.5 billion years ago, but also contain younger ages suggesting volcanic activity in the northern hemisphere. The zircons' hafnium isotope composition reveals a primitive reservoir in Mars' interior, unchanged since the planet's formation.
A new study reveals that water on Mars is directly transported to the upper atmosphere, where it is converted into atomic hydrogen that escapes to space. The process is more pronounced during dust storms, including the 2018 global dust storm.
Researchers propose that water emerges during planet formation, contradicting previous 'accidental' asteroid collision theory. The study found water on Mars for the first 90 million years of existence, suggesting it was a bioproduct of the planet's formation process.
Astronomers detect tiny free-floating planet with timescale of just 42 minutes, shedding light on turbulent past of young planetary systems. The discovery demonstrates that low-mass free-floating planets can be detected and characterized using ground-based telescopes.
Researchers measured the spectrum of a rare hot Neptune exoplanet, revealing evidence of molecular absorption in its atmosphere. This detection provides clues on the origin of the planet and how it managed to hold onto its atmosphere.
Researchers from the University of Kansas have characterized the atmospheric makeup of LTT 9779b, a highly unusual hot Neptune discovered by NASA's TESS mission. The study reveals the planet's temperature and composition, shedding light on the formation of exoplanet atmospheres.
A landmark special issue collaboration between Kew and New Phytologist Foundation highlights the global roadmap for protecting and sustainably using plants and fungi. The research emphasizes the importance of collaboration and recognizes the threats to plant and fungal diversity, highlighting a critical need for conservation efforts.
Astronomers have discovered an Earth-sized 'pi planet' called K2-315b, which orbits its star every 3.14 days and has a surface temperature of around 350 degrees Fahrenheit, making it unlikely to support life.
NASA's Hubble Space Telescope has captured a crisp new image of Jupiter's storms, revealing a bright white plume traveling around the planet at 350 miles per hour. The Great Red Spot, currently an exceptionally rich red color, is shrinking in size and appears to be interacting with surrounding clouds.
The discovery of WD 1856 b, a Jupiter-sized planet orbiting a white dwarf every 34 hours, shows the likely presence of planets around these star remnants. The finding was made possible by NASA's TESS Space Telescope and Spitzer Space Telescope data.
Astronomers have found a Jupiter-sized planet orbiting a white dwarf star at breakneck speed every 34 hours. The system violates common conventions and may provide a rare habitable arrangement for life to arise.
An international team of astronomers has reported the discovery of a planet, WD 1856 b, orbiting a white dwarf star, which is about seven times larger than the star. The planet's unusual orbit has confirmed previous theories of planetary migration from outer to inner solar systems.
Astronomers have discovered a Jupiter-sized planet, WD 1856b, orbiting close to a white dwarf star, defying previous assumptions about planetary destruction. The planet's unique characteristics suggest it may have originated far from the star and survived its demise, raising hopes for future discoveries.
Astronomers have detected a Jupiter-sized planet, TOI-1899 b, orbiting a low-mass star, providing insights into the formation of giant planets. The discovery was made possible by the Habitable-zone Planet Finder spectrograph and offers a unique opportunity to study the properties of warm Jupiters.
Researchers found three large, misaligned dust rings around the young triple star system GW Ori, with sufficient dust for planet formation. A computer simulation suggests that a hidden planet may have carved out a dust gap and broken the disk at the location of the current inner and outer rings.
A team of experts identified a stellar system where planet formation might take place in inclined dust and gas rings within a warped circumstellar disc around multiple stars. The discovery reveals that the inner ring contains 30 Earth masses of dust, which could be enough to form planets.
A team of astronomers identified the first direct evidence that groups of stars can tear apart their planet-forming discs, leaving them warped and with tilted rings. This discovery suggests exotic planets may form in inclined rings around multiple stars.
Two teams of astronomers used ALMA to discover a misaligned ring system in the planet-forming disk of GW Orionis, a triple star system. The findings suggest that either gravitational pull from the stars or a newborn planet caused the misalignment, highlighting the complex processes involved in planetary formation.
New study finds enstatite chondrite meteorites contain sufficient hydrogen to deliver at least three times the mass of Earth's oceans, contradicting assumptions that the planet is dry. The findings support the idea that Earth's water originated from the nebular material from which the planet accreted.
Researchers at the University of Texas at Austin found that precipitation must have been between 13-520 feet to fill ancient lake beds and river valleys on Mars. This study helps scientists understand the planet's climate and provides a crucial reference for future Mars missions.
Scientists are using a High Resolution Echelle Spectrometer (HIRES) and iSHELL/IRTF to observe the newly discovered planet AU Mic, aiming to disentangle its radial velocity signal from stellar activity. This will allow for precise calculations of the planet's orbital parameters and mass.
Astronomers have discovered a Saturn-sized planet orbiting a small, cool star 35 light-years from Earth using the astrometric technique. The planet has a mass comparable to Saturn and orbits its star every 221 days. This discovery is significant as it reveals that smaller planets can exist around cooler stars.
The latest Hubble image of Saturn reveals small atmospheric storms in the planet's northern hemisphere, with pronounced banding visible. The ringed planet's atmosphere is mostly hydrogen and helium, with seasonal changes due to increased sunlight also producing a reddish haze.
Astronomers have discovered a lost planet, NGTS-11b, which orbits a star 620 light years away and is located five times closer to its sun than Earth. The discovery brings astronomers closer to finding cooler planets in the habitable 'Goldilocks zone' that can support liquid water.
Researchers at the University of Maryland have discovered 37 recently active volcanic structures on Venus, suggesting the planet's interior is still churning. The study provides evidence that Venus is no longer a dormant planet and may hold clues to its geological development.
Astronomers at the University of Warwick have discovered a Neptune-sized gas giant with an exposed core, allowing for the first time to peer inside a planet. The core is believed to be 'failed' or stripped of its gaseous atmosphere, offering insights into planet formation and composition.
Scientists have discovered an exoplanet with an exposed core, similar in size to Neptune, orbiting a star about 730 light years away. The researchers believe the planet may be a gas giant that lost its atmosphere or failed to form one due to special circumstances.
KELT-9 b experiences two summers and two winters every year due to its unique polar orbit around an extremely hot star. The planet's atmosphere streams away into space as it receives 44,000 times more energy from its star than Earth does from the Sun.
Researchers successfully measured the spin-orbit alignment for the first time in a directly-imaged planetary system. The study reveals that the Beta Pictoris system is as well-aligned as our own solar system, favoring planet-planet scattering as the cause of orbit obliquities.
The Hubble Space Telescope captured an image of a young star surrounded by a disk that casts a huge, 200-light-year-long shadow. The shadow's movement was initially thought to be caused by planet warping the disk, but further observation revealed it was actually flapping like wings.
Astronomers have discovered a Neptune-sized planet, AU Mic b, orbiting a young and nearby star, AU Microscopii. The discovery provides an opportunity to study the early days of planetary formation and migration in a solar system's early stages.
Scientists have discovered a planet about as large as Neptune that orbits the young star AU Mic in just over a week, providing valuable insights into planetary formation and evolution. The planet, named AU Mic b, was detected using data from NASA's Transiting Exoplanet Survey Satellite (TESS) and retired Spitzer Space Telescope.
Astronomers using TESS and Spitzer data report the discovery of AU Mic b, a Neptune-like planet that orbits its young star in under 10 days. The system offers a unique laboratory for studying planetary atmospheres and interactions with stars.
Astronomers have discovered an infant planet, AU Mic b, orbiting a 25-million-year-old star in the solar system. The planet, about the size of Neptune, takes only eight and a half days to complete one orbit around its host star, AU Microscopii.
Researchers estimate that there may be as many as one Earth-like planet for every five Sun-like stars in the Milky Way Galaxy. This number could lead to new insights into planet formation and evolution theories, optimizing future exoplanet missions.
Scientists analyzed mineral data from glaciers to determine Earth's climate before the Neoproterozoic glaciation. They found that the planet may have experienced a gradual cool-off into a Snowball Earth state, rather than an abrupt transition.
The study found that airborne dust can cool down the hotter dayside but also warm the night side, effectively widening the planet's habitable zone. This process is a negative climate feedback, postponing the loss of water and making the planet more habitable.
Astronomers found that stars in the cluster's periphery have planet-forming dust clouds, while those near the center lack them. The observations suggest that location plays a crucial role in planet formation, and massive stars may alter disk properties, making it harder for planets to form.
Cornell University astronomers have developed a practical model to tease out climate clues for potentially habitable exoplanets. By analyzing the effects of planetary surface color and light from its host star, they can calculate a climate, providing valuable insights into the detectable spectra of Earth-like planets.
The Cassini spacecraft captured high-resolution images of Saturn's Hexagon, revealing a multilayered haze system with particles as small as 1 micron. The team discovered that the hazes are organized by gravity waves and may be responsible for the hexagon's formation.
The collaboration provides new insights into Jupiter's turbulent weather, including the association of lightning outbreaks with specific cloud structures. The team maps lightning flashes onto optical images, revealing a three-way combination of clouds and clear regions that facilitate convection and energy release.
Researchers from UBC have discovered a new timeline for the ancient magnetic field on Mars, with evidence of dynamo activity at 4.5 billion and 3.7 billion years ago. The findings suggest that the Martian dynamo was active earlier than previously thought, providing insights into the planet's thermal history and evolution.
Researchers tracked Venus' atmospheric clouds and winds using Akatsuki data to estimate forces sustaining super-rotation. Thermal tides from solar heating near the equator are found to provide required angular momentum
Researchers found that atmospheric tidal waves formed from solar heating on the planet's dayside and cooling on its nightside maintain Venus' super-rotation. The study also reveals a dual circulation system that transports heat across the globe.
Researchers used a new geochemical tool to analyze volatile elements in Earth's interior, revealing that nitrogen has been present since the planet's formation. The method, which identifies air contamination, provides valuable insights into the evolution of our planet and may also be used to monitor volcanic activity.
Researchers have successfully measured wind speed on a brown dwarf, an object intermediate in mass between a planet and a star. The study found that the brown dwarf's atmosphere is rotating faster than its interior, with a calculated wind speed of about 1425 miles per hour.
A team led by Professor Shigeru Ida from Tokyo Institute of Technology suggests that Uranus was struck by a small icy planet, which tipped the young planet over and left behind its unique moon system. This model reproduces the current configuration of Uranus' satellites and may help explain other icy planets' configurations.
Scientists discovered that more carbon than expected stayed in the mantle, suggesting it was sequestered into lighter elements like silicon and oxygen in the core. Despite this, the majority of Earth's total carbon inventory still likely exists in the core.
New studies propose that Earth's mantle, rather than its core, was responsible for generating the planet's early magnetic field. This concept is supported by estimates of thermodynamics of magnetic field generation within the liquid portion of the early Earth's mantle.
Researchers propose that Mercury's surface chemistry lab, fueled by solar winds and hot temperatures, can produce ice over a period of 3 million years. This process could account for up to 10% of Mercury's total ice reserves.
Researchers detected chemical variations between day and night on the planet, revealing the presence of iron vapour condensing into drops on the dark side. This discovery provides insights into the extreme climate conditions on ultra-hot giant exoplanets.
Numerical simulations reveal a 'safety zone' where warmer gas pushes satellites away from their parent planets, explaining the presence of single large moons like Titan. The findings support the idea that many large moons formed along with their parent planets.
Astronomers have discovered a rare opportunity to study the evolution of a planetary system, with the DS Tuc binary system providing insights into how planets form without being heavily impacted by external forces. The findings suggest that the planet DS Tuc Ab formed through relatively calm processes.
The SEIS seismometer has measured over 174 probable 'Mars quakes', providing valuable data on the planet's composition. The analysis indicates a layer of rock 10 kilometres thick, with waves spreading at relatively slow speeds, suggesting fissured or chemically altered rock.
Astronomers at the University of Cambridge discovered a potentially habitable exoplanet, K2-18b, which is 2.6 times the radius and 8.6 times the mass of Earth. The planet's hydrogen-rich atmosphere may allow for liquid water to exist beneath its surface.
The InSight lander has detected gravity waves, surface swirling dust devils and the steady rumble of infrasound on Mars. The team also found daily pressure and temperature fluctuations stronger than on Earth, and convective vortices known as dust devils.