An international team led by Sascha Quanz has studied the disc of gas and dust around young star HD 100546, spotting a candidate protoplanet that could be a giant similar to Jupiter. The discovery provides an unique laboratory for studying the formation process of a new planetary system.
A new study suggests that future evidence for extraterrestrial life might come from dying stars, specifically from planets orbiting white dwarfs. Detectable oxygen in the atmosphere of these planets could indicate the presence of life, and a recent simulation indicates JWST can detect this with only a few hours of observation time.
Astronomers used Kepler spacecraft data to discover a planet smaller than Mercury, about the size of Earth's moon, in the Cygnus-Lyra region of the Milky Way. The planet, Kepler-37b, is likely a rocky world with no atmosphere or water.
Astronomers discovered a mysterious planet circling the nearby star Fomalhaut with an unusual elliptical orbit. The team hypothesizes that another undetected planet may have gravitationally ejected Fomalhaut B, sending it on a collision course with a vast dust ring.
Researchers using NASA's Kepler spacecraft have found that about 17% of stars have an Earth-sized planet in an orbit closer than Mercury. This means there are at least 17 billion possible Earth-like planets in the Milky Way, with 50% of stars having a planet of Earth-size or larger in a close orbit.
A six-year observation by ESA's Venus Express reveals significant changes in the planet's atmosphere, suggesting recent volcanic eruptions. The thick atmosphere contains over a million times more sulphur dioxide than Earth's, which is mostly generated by volcanic activity.
New research suggests that planets orbiting white or brown dwarfs are unlikely to support life due to the cooling and shrinking of their habitable zones. The study's findings indicate that such planets would have had to undergo a 'sterilization phase' in the past, making them dead for hosting life.
Astronomers have discovered that dwarf planet Makemake lacks a significant atmosphere, revealing new insights into its composition. The study used observations of Makemake passing in front of a star to determine its size, density, and albedo, with findings comparable to dirty snow.
Asteroid belts may play a key role in the evolution of complex life. According to a NASA study, only a tiny fraction of planetary systems seem to have giant planets in the right location to produce an asteroid belt of the appropriate size. This suggests that our solar system may be special.
A new analysis of Hubble observations suggests Fomalhaut b is a rare, uniquely massive planet shrouded by dust. The team found the planet remained at constant brightness, contradicting earlier interpretations of it as a transient dust cloud.
A new study using the Keck II telescope has produced high-resolution infrared images of Uranus, revealing its bizarre weather patterns. The planet's deep blue-green atmosphere is characterized by massive weather systems behaving in unusual ways, with winds reaching up to 560 miles per hour.
Astronomers detect the lightest exoplanet ever found around a Sun-like star, orbiting about six million kilometers away from the star. The newly discovered planet has a mass similar to Earth and orbits Alpha Centauri B every 3.2 days.
Astronomers have identified a super-Earth called 55 Cancri e as a likely diamond planet, composed primarily of carbon in the form of graphite and diamond. The planet's mass is eight times greater than Earth's, and it orbits its star at hyper speed, with a surface temperature of about 3,900 degrees Fahrenheit.
The research aims to test two theories on Venus' geological history, focusing on its volcanic activity and plate tectonics. The team will gather data from NASA's Magellan mission and create statistical models to analyze the orientations of volcanic constructs.
Researchers at the University of Texas at Austin have developed a simulation model to study how planets form from protostellar disks. The models simulate key factors such as turbulence and temperature, which affect planet formation, providing insights into the conditions most favorable for planetary birth.
Astronomers have discovered the first multi-planet system orbiting a binary star, characterized by the University of Texas at Austin's McDonald Observatory. The system, Kepler-47, features an outer planet within the habitable zone, where liquid water could exist.
Kepler-47b and Kepler-47c are the smallest known transiting circumbinary planets, with masses of 8 and 20 times that of Earth. The outer planet, Kepler-47c, is located within the habitable zone and orbits every 303 days, making it a promising candidate for hosting liquid water.
Astronomers discover the first transiting circumbinary multi-planet system, Kepler-47, which contains two planets orbiting around a pair of stars. The inner planet is the smallest known transiting circumbinary planet and orbits every 49 days, while the outer planet orbits every 303 days and is in the habitable zone.
Astronomers have discovered evidence of a planet's destruction by its aging star, BD+48 740. The star's peculiar chemical composition and highly unusual elliptical orbit suggest that it consumed a massive planet, leaving behind a surviving massive planet with an eccentric orbit.
Astronomers detected significant atmospheric variations on HD 189733b due to a stellar flare, with gas escaping at speeds over 300,000 mph. The discovery provides insights into the interaction between a star and its giant planet.
Researchers have successfully measured the motion of exoplanet Tau Bootis b, revealing its mass to be six times that of Jupiter. The team used an innovative technique to unravel direct light from the planet itself, overcoming previous attempts to measure its atmosphere.
A new method has been developed to measure the mass of non-transiting planets using carbon monoxide signatures in their atmospheres. This breakthrough technique allows for precise mass determination, opening a new path to study exoplanet properties and potentially detect molecules associated with life.
Researchers use CRIRES instrument on VLT to study Tau Bootis b's atmosphere, measuring mass and carbon monoxide levels. The new technique allows for the detection of non-transiting exoplanets' atmospheres, enabling scientists to learn more about their atmospheric conditions.
The newly discovered two-planet system of Kepler-36 features a rocky planet Kepler-36b and a gas giant Kepler-36c that experience close encounters every 97 days. Researchers are struggling to understand how these worlds ended up in such tight orbits, but the discovery has significant implications for the search for exoplanets.
Recent research analyzed two Martian meteorites from within the Red Planet's interior, revealing a vast amount of water similar to Earth's. This discovery raises the possibility that Mars could have sustained life and suggests volcanoes as the primary vehicle for getting water to the surface.
A research team has discovered two planets, Kepler-36b and Kepler-36c, in an orbital tug-of-war as they orbit the same star about 1,200 light years from Earth. The planets occupy nearly the same orbital plane and come within 1.2 million miles of each other at their closest approach.
Astronomers have found two planets with diverse densities and compositions locked in close orbits, defying the planetary pattern of our solar system. The discovery, made possible by NASA's Kepler Mission, reveals a 'puzzling pair' that challenges theories on planet migration and orbital rearrangement.
The KELT telescope has discovered two unusual planets, including a massive, puffed-up planet dubbed KELT-1b that may challenge our understanding of solar system evolution. The other planet, KELT-2Ab, is a Jupiter-like world with a bright star that will allow astronomers to study its atmosphere.
Researchers warn of an impending catastrophic event where the planet's ecosystems irreversibly collapse due to extreme fluctuations in climates and biodiversity loss. The study suggests that governments must take immediate action to reduce population growth, invest in sustainable technologies and adopt environmentally-friendly practices.
Researchers will observe the Arc of Venus, a glowing rim around Venus, to learn about its atmosphere and super-rotation. The phenomenon reveals temperature and density structures in Venus' middle atmosphere, shedding light on the planet's mysterious evolution.
Researchers discovered that meteorites can generate methane when exposed to sunlight, which could account for a large part of Mars' atmosphere. This finding informs future Mars missions searching for life and suggests that sunlight and debris from meteorites play a role in shaping the planet's atmosphere.
A team of scientists has discovered an unseen planet orbiting a Sun-like star,KOI-872, by analyzing transit variations caused by the hidden object's gravity. The planet is estimated to be about the mass of Saturn and orbits its host star every 57 days.
Scientists use Schumann Resonance technique to study planetary atmospheres, gaining insights into the solar system's composition and formation. By detecting electromagnetic waves from above, researchers can measure global density of volatiles like water, methane, and ammonia.
Astronomers at the University of Florida have discovered two low-mass planets orbiting the nearby star Fomalhaut. Using ALMA's superior resolution and sensitivity, they found that the ring of dust surrounding the star is shaped by two planets working together to maintain its narrow width.
The declaration warns that humanity is driving the planet into a new epoch, the Anthropocene, where human activities dominate planetary processes. The conference calls for urgent action and proposes new initiatives to promote global sustainability, including a new framework for development goals and a UN Sustainable Development Council.
Scientists have found that Mercury's core is larger than anticipated, occupying 85% of the planet's radius. The planet's topography shows smaller elevation ranges compared to Mars or the Moon, with evidence of large-scale changes since its geological history.
The Planet under Pressure conference brings together 2,500 specialists to present scientific knowledge on the planet's state and potential solutions. Public events at science centers and museums worldwide will take place concurrently, giving the public a snapshot of the planet's state and scientific concern.
Scientists at University of Copenhagen have reconstructed the isotopic composition of 3.8 billion-year-old seawater, revealing that young planet's oceans had proportionately more 'normal water' than 'heavy water'. This discovery suggests Earth has lost less than ¼ of its water budget over the last roughly 4 billion years.
A recent study analyzed the photospheric stellar abundances of planet-host stars, uncovering a wide variety of terrestrial planet compositions. The results suggest that extrasolar planets may be significantly different from Earth due to variations in elemental ratios and planetary formation processes.
These powerful telescopes enable forefront research in astrophysics, unlocking the secrets of star- and planet-formation processes. The new facilities will study gas and dust motion around young stars, testing theories of planet formation.
A team of scientists has detected a potentially habitable super-Earth orbiting a nearby M-class dwarf star called GJ 667C. The planet receives 90% of the light that Earth receives and is expected to absorb similar amounts of energy, which could lead to surface temperatures similar to those on Earth.
A team of researchers has discovered a large, rocky planet with a surface temperature comparable to a comfortable spring day on Earth. The planet orbits in the middle of its star's habitable zone, where liquid water is expected to exist.
Two NASA missions aim to discover what transformed Mars from a potentially habitable planet to its current inhospitable state. The Curiosity rover and the MAVEN mission will explore Martian terrain, atmosphere, and geology to uncover clues about the Red Planet's past climate and potential for life.
Scientists have discovered thousands of Earth-oceans' worth of water within the planet-forming disk of TW Hydrae. This finding suggests that comets could deliver vast amounts of water to new planets through impacts. The detection was made using the Heterodyne Instrument for the Far-Infrared on the Hershel Space Observatory.
A global plan for sustainable agriculture has been developed to increase food production by doubling current levels, while minimizing environmental damage. The plan combines data from crop records and satellite images to create new models of agricultural systems.
Researchers have found visual evidence for two extrasolar planets in archival Hubble data from 1998, using a novel approach to detect faint planet signals. The discovery allows for the tracking of planetary orbits and provides insight into system stability, mass, and eccentricity.
The MESSENGER mission has provided unprecedented data on Mercury's magnetic field, revealing a host of firsts, including evidence of widespread flood volcanism and direct measurements of its surface composition. The study sheds light on the planet's global magnetic field geometry and its interaction with solar wind.
Scientists have discovered that atmospheric gases are mixed into the Earth's mantle during subduction, providing clues to the planet's birth and evolution. The study suggests a more complex history of gas dissolution than previously thought, contradicting the idea that most Earth gases were delivered by meteorites.
Astronomers at Yale University have discovered the first two potential exoplanets found by Planet Hunters users analyzing real scientific data from NASA's Kepler mission. The candidate planets orbit their host stars with periods ranging from 10 to 50 days and radii that range in size from two-and-a-half to eight times Earth's radius.
Astronomers have discovered a planet that orbits around a pair of stars, providing direct evidence for the existence of circumbinary planets. The discovery was made using data from the NASA Kepler space telescope and confirms long-speculated theories about these systems.
Astronomers detect a double sunset on the newly discovered Kepler-16b, a planet similar to Saturn in size and mass. The planet orbits two smaller, cooler stars and is estimated to be around -100°C due to its distance from its parent bodies.
Astronomers found a small, half-Jupiter-sized planet with a diameter of 60,000 kilometres orbiting an extremely dense pulsar, suggesting a unique formation process. The discovery reveals the possibility of a diamond-like structure in the planet's core due to its incredibly high density.
A team of astronomers using CSIRO's radio telescope discovered a small planet made of diamond orbiting an unusual star called PSR J1719-1438. The discovery provides insight into the evolution of binary systems and the formation of 'diamond planets', which are thought to be composed of crystalline material.
Astronomers have detected a planet orbiting a rapidly spinning pulsar, dubbed PSR J1719-1438. The discovery suggests that the planet is composed primarily of carbon and oxygen, likely forming a diamond-like material due to its high density.
Astronomers at Caltech have discovered that the dwarf planet 2007 OR10, or Snow White, is an icy world with about half its surface covered in water ice. The findings suggest that the red-tinged dwarf planet may be covered in a thin layer of methane, remnants of an atmosphere slowly being lost into space.
TrES-2b's extremely dark surface is attributed to its high temperature and the presence of light-absorbing chemicals. The planet emits a faint red glow due to its heat, revealing it's not pitch black despite its low reflectivity.
The Juno mission aims to resolve unanswered questions about the massive planet and its evolution. By analyzing microwave signals passing through Jupiter's atmosphere, scientists hope to understand how much water exists there.
The Juno Mission aims to study the origin and evolution of Jupiter, helping scientists understand planetary formation and the solar system. The spacecraft will orbit Jupiter's poles 33 times, measuring magnetic activity and water content in its atmosphere.
A new school-based obesity prevention curriculum has been shown to significantly reduce medical costs associated with obesity and eating disorders. The program, Planet Health, was found to prevent 1 case of bulimia nervosa among girls aged 13-17 in each participating school, resulting in an estimated $34,000 in savings per girl.
The Hubble Space Telescope has taken anniversary pictures of Neptune, revealing high-altitude clouds in the northern and southern hemispheres composed of methane ice crystals. The images also show that cloud activity is shifting to the northern hemisphere, with seasons lasting about 40 years.