Astronomers have discovered an exoplanet orbiting Barnard's star, located six light-years away, which has at least half the mass of Venus and orbits its star in just over three Earth days. The discovery was made using ESO's VLT and confirms the existence of a new exoplanet candidate, while also hinting at the presence of three more.
A team of astronomers discovered a planetary system that resembles the sun-Earth system, with an Earth-size companion in an orbit twice as large as Earth's today. The discovery provides insight into the evolution of main sequence stars and their impact on planets.
Researchers confirm multi-stage lithospheric dripping as cause of basin subsidence in Central Anatolian Plateau. Laboratory experiments and satellite data reveal intricate connection between plateau uplift and basin formation events.
Researchers discovered an unexpected increase in H2O and HDO concentrations in Venus' mesosphere, with the HDO/H2O ratio rising 120 times higher than expected. This finding suggests that solar radiation broke down water isotopologues, producing hydrogen atoms that escape into space, leading to deuterium enrichment.
A team of researchers developed a new model that incorporates all necessary physical processes in planet formation, showing that annular perturbations can trigger the rapid formation of multiple gas giants. The results match latest observations and indicate more efficient and quick planet formation than previously thought.
Researchers discovered extreme differences in mitochondrial gene activity between males and females, highlighting the need for sex-specific disease therapies. The study, published in the Proceedings of the National Academy of Sciences, found that male mitochondria exhibit more protein-coding genes than females.
A research team led by HKUST developed a liquid metal-based electronic logic device that mimics the intelligent prey-capture mechanism of Venus flytraps. The device exhibits memory and counting properties, allowing it to respond intelligently to stimulus sequences without additional components.
The study presents a comprehensive physical explanation for the sun's activity cycles, attributing them to Rossby waves mediated by planetary tidal influences. This model successfully explains the Schwabe cycle and other solar cycles, providing strong evidence for the planetary hypothesis.
Astronomers have discovered an Earth-like exoplanet 40 light-years away with a surface temperature of 42°C (107°F), making it potentially habitable. The discovery of Gliese 12 b offers insights into the evolution of habitability on planets across our galaxy.
Astronomers have discovered a planet called Gliese 12 b, which is an 'evil twin' of Earth with conditions similar to Venus. The planet orbits its star in just 12.8 days and receives 1.6 times more radiation than Earth.
Astronomers have discovered a temperate, Earth-size world orbiting a small red dwarf star called Gliese 12. The planet, named Gliese 12 b, has a surface temperature of around 107 degrees Fahrenheit and receives about 1.6 times more energy from its star than Earth does.
Scientists studied gallium nitride devices under extreme temperatures and found that ohmic contacts remained structurally intact even at 500 degrees Celsius. This breakthrough could lead to the development of high-performance transistors for Venus exploration and other applications.
A study led by NYU Tandon School of Engineering and University of Rome Tor Vergata reveals the Venus flower basket sponge's ability to filter feed using only faint ambient currents, no pumping required. This discovery could help design more efficient chemical reactors, air purification systems, and hydraulic systems.
A new study has revealed the mechanisms behind hydrodynamic escape in low-mass exoplanets, which is a process that can lead to significant changes in a planet's mass and climate. The research proposes a new classification method for understanding these escape processes and provides insights into the habitability of distant worlds.
Researchers at University of Colorado Boulder discovered that hydrogen atoms in Venus' atmosphere go into space, causing the planet to lose roughly twice as much water every day. The team found that a molecule called HCO+ is responsible for this process, which may have driven Venus to its dry state.
Scientists from Penn created a non-volatile memory device using ferroelectric aluminum scandium nitride (AlScN) to retain data at high temperatures. The device's stability and fast switching properties enable efficient computation in harsh conditions, including space exploration and deep-earth drilling.
A new paper argues that Venus, with its surface temperatures hot enough to melt lead and a toxic atmosphere, can provide valuable lessons about the potential for life on other planets. The study highlights the importance of understanding the conditions that make Earth habitable, as well as the risks of runaway greenhouse effects.
A recent study published in Nature Astronomy revealed that positively charged carbon ions are being accelerated to escape speeds in a previously unexplored region of Venus's magnetosphere. This discovery sheds new light on the planet's atmospheric evolution and the loss of its historical water content.
A new study using the James Webb Space Telescope has captured the first-ever image of a planet-forming disk's gas dispersal, providing insights into how planets form in our solar system. The observations reveal that the inner disk of T Cha is evolving on very short timescales, differing from earlier spectra detected by Spitzer.
Researchers discovered that 19 amino acids essential to life on Earth can persist for up to four weeks in concentrated sulfuric acid, which is similar to the concentrations found in Venus' clouds. This finding suggests that the clouds of Venus could support complex chemicals needed for life.
Researchers from the University of Cambridge identified iron-bearing sulfate minerals as the cause of the mysterious UV absorption feature on Venus' clouds. The discovery was made possible by synthesizing and analyzing minerals under extreme chemical conditions.
Researchers have devised a new method to identify habitable planets and potentially inhabited planets by comparing atmospheric CO2 levels, which suggests the presence of liquid water. This signature can be detected with current telescopes, providing a path to identify life on exoplanets.
Scientists simulated the runaway greenhouse effect, transforming habitable climates into hostile environments, with significant changes in atmospheric structure and cloud coverage. The study provides key insights for the search of life elsewhere, as it demonstrates a critical water vapor threshold beyond which a planet cannot cool down.
New research from the Max Planck Institute challenges previous claims of giant exomoons around Kepler-1625b and Kepler-1708b. The study uses a computer algorithm to analyze observations, finding that 'planet-only' interpretations are more conclusive than initially thought.
A new genomic study sheds light on the evolutionary innovation behind carnivorous Asian pitcher plants, suggesting that duplicated genomes may have enabled specialized carnivory and separate-sexed plants.
A new study suggests that Venus once had plate tectonics similar to those on early Earth, which could have supported microbial life. The researchers used atmospheric data and computer modeling to show that the planet's current atmosphere and surface pressure would only be possible with an early form of plate tectonics.
Recent satellite deployments have reached record-breaking brightness levels, posing a threat to ground-based astronomy. The addition of 400,000 satellites in the near future could completely alter the night sky.
A team of space physicists used NASA's Parker Solar Probe to analyze whistler waves, finding they originated from disturbances in Venus' weak magnetic fields. The results support a previous study that failed to detect radio waves generated by lightning strikes on the planet.
A research team from the Chinese Academy of Sciences explores how plants regulate motion speed and proposes potential strategies for biomimetic actuators. They draw inspiration from plant tissues with unique structures and compositions to develop artificial actuators responsive to humidity, solvents, heat, light, and electricity.
The Venus flytrap uses special heat receptors in its sensory hairs to detect and respond to rising temperatures, protecting its vital snap traps from damage. This allows the plant to continue hunting for food after a fire has ravaged its surroundings.
Researchers at Stanford University have discovered a way to interpret the meaning of dune patterns, which can be used to understand environmental changes on planetary bodies such as Mars, Venus, and Titan. The study found that high interaction density between dunes signals recent or local changes in boundary conditions.
Researchers have developed a new bioelectronic technology to map fast electrical signals in plants, revealing how plants respond to touch and stress. The study uses a multi-electrode array technology on the Venus Flytrap, demonstrating that electrical signals originate from sensory hairs.
A Southwest Research Institute-led team modeled the early impact history of Venus to explain how it maintains a youthful surface despite lacking plate tectonics. The findings suggest that higher-speed, higher-energy impacts created a superheated core that promoted extended volcanism and resurfaced the planet.
An international group of experts has developed a planetary protection policy to safeguard Earth from potential threats and avoid compromising the search for lifeforms on other celestial bodies. The policy aims to prevent biological and organic contamination of space missions, ensuring the safety of our planet.
Research investigates early magma ocean and its impact on the Earth's surface environment, shedding light on planetary interior and surface interactions. The study suggests that metallic iron from late-accreting materials may have reduced the upper mantle's oxidation state.
The 2023 International Venus Observation Campaign aims to characterize the planet's atmosphere near the cloud-top level from three locations in the solar system. Key findings include the discovery of unknown UV absorbers in the upper clouds, which will be studied using data from JAXA's Akatsuki orbiter and ground-based telescopes.
A newly discovered exoplanet, LP 890-9c, is providing important insights into conditions at the inner edge of a star's habitable zone. The team's models detail differences in chemical signatures generated by rocky planets near this boundary, based on variables including size, mass, and surface temperature.
The study finds that TRAPPIST-1 c has a extremely thin atmosphere, if it exists at all. The planet's dayside temperature is the coolest ever characterized, suggesting it may be a bare rock with no atmosphere.
Researchers at Duke University have identified a climate feedback loop that could accelerate climate change. Monitoring mixotrophs, tiny organisms with dual metabolism modes, may allow us to anticipate the tipping point before it gets there. However, nutrient pollution poses a challenge to detecting early warning signals.
The newly discovered planet, LP 791-18d, is almost the same size as Earth and has a chaotic environment with intense temperatures and possible volcanic activity. The planet's proximity to its neighbor LP 791-18c could create hazardous gravitational forces, but also potentially seed its atmosphere with gases and water.
Astronomers have discovered an Earth-sized planet, LP 791-18d, with active volcanoes that could sustain an atmosphere, potentially allowing for liquid water and life. The planet's unique tidal locking creates a permanent day and night side, with the night side possibly experiencing condensation of water vapor.
For most of its life, a Sun-like star fuses hydrogen into helium in its hot core, causing it to expand and engulf nearby planets. The first direct evidence of this event was observed using the Gemini South Adaptive Optics Imager, revealing a long-lasting outburst with ejected material containing about 33 Earth masses of hydrogen.
Ancient Mayans used an 819-day calendar that covered a much larger timeframe than previously thought. By increasing the calendar length to 20 cycles of 819 days, researchers found a pattern emerges in which the synodic periods of all visible planets align with station points in the larger calendar.
The study analyzed ancient dolomite deposits to estimate the temperature and composition of a shallow inland sea during the Palaeoproterozoic era. The findings suggest that the conditions were ideal for photosynthetic algae to emerge, pumping oxygen into the atmosphere.
Researchers at Simon Fraser University are studying the genes of superbugs to develop new and effective treatments for drug-resistant bacterial infections. The team has discovered new genes responsible for causing disease and infection symptoms in humans, which can be targeted by antivirulence drugs.
Researchers Paul Byrne and Rebecca Hahn have compiled a global catalog of 85,000 volcanoes on Venus, providing the most comprehensive understanding of the planet's volcanic properties. The dataset includes detailed analyses of volcano distribution, size, and clustering, which will aid in locating future active lava flows.
The study identifies five exoplanets that resemble Venus in terms of radii, masses, and atmospheric conditions. By observing these 'exo-Venus' planets using the James Webb Space Telescope, scientists hope to uncover valuable insights into Earth's future and the possibility of a runaway greenhouse climate.
Researchers have identified evidence of ongoing volcanic activity on Venus based on radar images from the Magellan spacecraft. A vent in the Maat Mons volcano system appears to be changing shape and growing larger between two imaging cycles.
A new research paper by University of Alaska Fairbanks Geophysical Institute professor Robert Herrick revealed a nearly 1-square-mile volcanic vent on Venus, changing in shape and growing over eight months. This change is associated with volcanic activity.
A recent experiment by UC Riverside astrophysicist Stephen Kane demonstrates that a terrestrial planet in this location would have disastrous effects on the solar system. The simulation found that such a planet could destabilize Earth's orbit, making it far less habitable and potentially ejecting Mercury and Venus from the solar system.
Recent planetary missions have revealed significant advances in our understanding of Mercury's metal composition and magnetic field, as well as Venus' dense atmosphere and geological activity. On Mars, the InSight mission has detected marsquakes, suggesting a similar internal structure to Earth.
The study reveals that 'similar' planetary systems are the most common type, followed by 'ordered' and then 'anti-ordered' systems. The researchers found that factors such as gas and dust disk mass and star abundance play a crucial role in determining system architecture.
The BepiColombo and Solar Orbiter missions provided a unique insight into Venus' atmosphere retention through their gravity-assist flyby. The study revealed that the induced magnetosphere protects the atmosphere from solar wind erosion, extending to an unexpected distance of 1,900 km above the planet's surface.
A Venus flytrap mutant with a genetic defect has lost its ability to count prey touch numbers. Researchers analyzed gene expression patterns and calcium signaling pathways to understand the cause of the numerical disability.
A study published in the Astrophysical Journal reveals a strong correlation between cosmic ray counts and the solar cycle at Mars and Venus. The research found that cosmic rays are suppressed during peak solar activity, highlighting the importance of understanding these interactions for future robotic missions and human exploration.
Scientists from the University of Arizona have discovered a giant active mantle plume pushing the surface of Mars upward, causing earthquakes and volcanic eruptions. The finding suggests that Mars' deceptively quiet surface may hide a more tumultuous interior than previously thought.
An international team has discovered three near-Earth asteroids, including one that is 1.5 kilometers wide and may someday threaten Earth's path. The observations were made possible by the unique capabilities of the Dark Energy Camera mounted on the Víctor M. Blanco 4-meter Telescope at Cerro Tololo Inter-American Observatory.
A new surveillance constellation concept aims to detect and track near-Earth asteroids, providing early warning and tracking capabilities. The system consists of six space-based surveyors and a mothership, which work together to monitor the orbits of potentially hazardous asteroids.
Astronomers using JWST have detected unambiguous evidence of carbon dioxide in the atmosphere of WASP-39b, a Saturn-mass exoplanet. The discovery provides valuable insights into giant planet composition and heavy element abundance, with implications for understanding how planets form.
A comprehensive study reveals that nitrogen-fixers are most diverse in arid regions of the US, contrary to expectations. Plants have evolved creative ways to acquire nitrogen, and their diversity increases in these environments due to adaptations such as thicker cuticles.