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Categories: Space: The Solar System
Published Modern theory from ancient impacts
(via sciencedaily.com) It is generally accepted that the inner region of the early solar system was subject to an intense period of meteoric bombardment referred to as the late heavy bombardment. However, researchers have found evidence that suggests this period occurred slightly earlier than thought and was less intense but also more prolonged. Such details about this period could impact theories about the early Earth and the dawn of life.
Published Jupiter's moons could be warming each other
(via sciencedaily.com) The gravitational push and pull by Jupiter's moons could account for more warming than the gas giant Jupiter alone.
Published Sand-sized meteoroids are peppering asteroid Bennu
(via sciencedaily.com) A new study posits that the major particle ejections off the near-Earth asteroid Bennu may be the consequence of impacts by small, sand-sized particles called meteoroids onto its surface as the object nears the Sun.
Published Has Earth's oxygen rusted the Moon for billions of years?
(via sciencedaily.com) To the surprise of many planetary scientists, the oxidized iron mineral hematite has been discovered at high latitudes on the Moon.
Published Researchers develop dustbuster for the moon
(via sciencedaily.com) A new solution to the problem of spring cleaning on the moon: Why not zap away the grime using a beam of electrons?
Published Hubble uses Earth as proxy for identifying oxygen on potentially habitable exoplanets
(via sciencedaily.com) Taking advantage of a total lunar eclipse, Hubble used the Moon as a mirror to study sunlight that had passed through Earth's atmosphere. As a result, Hubble detected Earth's own brand of sunscreen - ozone - in our atmosphere. The technique simulates how scientists will search for evidence of life on planets around other stars.
Published Lava tubes on Mars and the Moon are so wide they can host planetary bases
(via sciencedaily.com) Original source Subsurface cavities created by lava on Mars and the Moon could provide a shield against cosmic radiation, new research suggests.
Published Surprisingly dense exoplanet challenges planet formation theories
(via sciencedaily.com) New detailed observations reveal a young exoplanet, orbiting a young star in the Hyades cluster, that is unusually dense for its size and age. Weighing in at 25 Earth-masses, and slightly smaller than Neptune, this exoplanet's existence is at odds with the predictions of leading planet formation theories.
Published The quiet Sun is much more active than we thought
(via sciencedaily.com) For a long time, researchers have believed that there is not much of interest going on in the Sun during the passive period, therefore not worth studying. Now this assumption is showed to be false. This is the first time that astronomers are systematically studying the phenomena of the solar minimum.
Published Alaskan seismometers record the northern lights
(via sciencedaily.com) An aurora sightseeing tour leader in Alaska, was lucky enough to photograph a 'eruption' of brilliant pink light in the night skies one night in February.
Published Hubble sees summertime on Saturn
(via sciencedaily.com) Saturn is truly the lord of the rings in this latest snapshot from NASA's Hubble Space Telescope, taken on July 4, 2020, when the opulent giant world was 839 million miles from Earth. A new Saturn image was taken during summer in the planet's northern hemisphere.
Published Scientists discover volcanoes on Venus are still active
(via sciencedaily.com) A new study identified 37 recently active volcanic structures on Venus. The study provides some of the best evidence yet that Venus is still a geologically active planet.
Published Higher concentration of metal in Moon's craters provides new insights to its origin
(via sciencedaily.com) Original source There has been considerable debate over how the Moon was formed. The popular hypothesis contends that the Moon was formed by a Mars-sized body colliding with Earth's upper crust which is poor in metals. But new research suggests the Moon's subsurface is more metal-rich than previously thought, providing new insights that could challenge our understanding of that process.
Published First exposed planetary core discovered allows glimpse inside other worlds
(via sciencedaily.com) The surviving core of a gas giant has been discovered orbiting a distant star, offering an unprecedented glimpse into the interior of a planet.
Published Orb hidden in distant dust is 'infant' Neptune-size planet
(via sciencedaily.com) The discovery could help astronomers understand how planets like Earth form and evolve.
Published Evidence supports 'hot start' scenario and early ocean formation on Pluto
(via sciencedaily.com) A new study suggests that Pluto and other large Kuiper belt objects started out with liquid oceans which have been slowly freezing over time.
Published Speed of space storms key to protecting astronauts and satellites from radiation
(via sciencedaily.com) Measuring the speed of coronal mass ejections (CMEs) as they erupt from the sun, in addition to their size, found to be crucial in providing accurate early warnings that keep astronauts and technology safe.
Published Atmospheric tidal waves maintain Venus' super-rotation
(via sciencedaily.com) An international research team has revealed that the 'super-rotation' on Venus is maintained near the equator by atmospheric tidal waves formed from solar heating on the planet's dayside and cooling on its nightside.
Published What makes Saturn's atmosphere so hot
(via sciencedaily.com) New analysis of data from NASA's Cassini spacecraft found that electric currents, triggered by interactions between solar winds and charged particles from Saturn's moons, spark the auroras and heat the planet's upper atmosphere.
Published Mysteries of Uranus' oddities explained
(via sciencedaily.com) Uranus is a planetary oddity. Our Solar System's planets revolve around the Sun in the same direction, and do so with their axes of rotation - the way they spin locally - orientated roughly perpendicular to their orbits. Uranus, however, is uniquely tipped over, with its axis almost parallel to its orbit. Uranus' moons and rings are also orientated this way, suggesting they formed during a cataclysmic impact that tipped it over early in its history.