Solar System Sun
Terrestrial Planet Mercury, Venus, Earth (Moon), Mars
Asteroid Belt Ceres, Vesta
Jovian Planet Jupiter, Saturn, Uranus, Neptune
Kuiper Belt Pluto, Haumea, Makemake
Scattered Disc Eris, Sedna, Planet X
Oort Cloud Etc. Scholz’s Star
Small Body Comet, Centaur, Asteroid
These are organized by a classification scheme developed exclusively for Cosma. More…
Mercury : the planet nearest the sun — Webster
Mercury is the innermost and smallest planet in the Solar System, orbiting the Sun once every 87.969 Earth days. The orbit of Mercury has the highest eccentricity of all the Solar System planets, and it has the smallest axial tilt. It completes three rotations about its axis for every two orbits. Mercury is bright when viewed from Earth, ranging from −2.3 to 5.7 in apparent magnitude, but is not easily seen as its greatest angular separation from the Sun is only 28.3°. Since Mercury is normally lost in the glare of the Sun, unless there is a solar eclipse it can be viewed from Earth’s Northern Hemisphere only in morning or evening twilight, while its extreme elongations occur in declinations south of the celestial equator, such that it can be seen at favorable apparitions from moderate latitudes in the Southern Hemisphere in a fully dark sky. — Wikipedia
Mercury News -- ScienceDaily Planet Mercury News. Read science articles and see images of Mercury.
The true power of the solar wind
on June 12, 2018 at 2:57 pm
The planets and moons of our solar system are continuously being bombarded by particles from the sun. On the Moon or on Mercury, the uppermost layer of rock is gradually eroded by the impact of sun particles. New results show that previous models of this process are incomplete. The effects of solar wind bombardment are much more drastic than previously thought. […]
Mercury's thin, dense crust
on April 27, 2018 at 2:03 pm
A planetary scientist has used careful mathematical calculations to determine the density of Mercury's crust, which is thinner than anyone thought. […]
Meteorite diamonds tell of a lost planet
on April 18, 2018 at 6:48 pm
Scientists have examined a slice from a meteorite that contains large diamonds formed at high pressure. The study shows that the parent body from which the meteorite came was a planetary embryo of a size between Mercury and Mars. […]
Understanding Mercury's magnetic tail
on April 17, 2018 at 3:57 pm
Theoretical physicists used simulations to explain the unusual readings collected in 2009 by the Mercury Surface, Space Environment, Geochemistry, and Ranging mission. The origin of energetic electrons detected in Mercury's magnetic tail has puzzled scientists. This new study provides a possible solution to how these energetic electrons form. […]
What the first American astronauts taught us...
on March 27, 2018 at 6:17 pm
Project Mercury proved that humans could live and work in space, paving the way for all future human exploration. […]
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Earth's magnetic shield booms like a drum when...
on February 12, 2019 at 10:00 am
The Earth's magnetic shield booms like a drum when it is hit by strong impulses, according to new research from Queen Mary University of London. […]
Asteroid from 'rare species' sighted in the...
on February 8, 2019 at 1:50 pm
Astronomers have discovered an asteroid looping through the inner solar system on an exotic orbit. The unusual object is among the first asteroids ever found whose orbit is confined almost entirely within the orbit of Venus. The asteroid's existence hints at potentially significant numbers of space rocks arcing unseen in uncharted regions nearer to the sun. […]
Visualization of regions of electromagnetic...
on February 5, 2019 at 2:13 pm
Researchers have investigated wave-particle interactions between energetic electrons and chorus waves evolving in the space surrounding the Earth using the scientific satellite Arase and, simultaneously, transient auroral flashes by the ground-based global observation network. The investigation visualized asymmetric spatial development of wave-particle interaction regions on the order of sub-seconds. This is expected to contribute to the safe and secure exploration of space by establishing […]
Giant impacts caused by interplanetary collisions
on February 5, 2019 at 12:22 pm
Astronomers have found fresh evidence for significant planetary diversity within a single exoplanet system, suggesting that giant high-speed collisions are partly responsible for planetary evolution. […]
Researcher discusses space tourism, the first...
on February 1, 2019 at 3:30 pm
In December 2018, Thomas Zurbuchen, associate administrator for NASA's Science Mission Directorate, visited Boston University to discuss funding opportunities with faculty and researchers. While on campus, he also gave a talk about NASA's current and future missions. Afterward, Zurbuchen sat down with BU Research to talk about the timeline for traveling to Mars and whether he thinks humans are destined to live in a galaxy far, far away. […]