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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Mercury and its depressions
on September 19, 2018 at 1:41 pm
One of the most surprising discoveries of the NASA's Messenger mission was the presence of unusual, bright, irregular and rimless flat-floored depressions on the surface of Mercury. These depressions, called hollows, are usually found on crater walls, rims, floors and central peaks. […]
Mercury studies reveal an intriguing target for...
on September 19, 2018 at 1:31 pm
A month before the planned launch of the joint ESA-JAXA BepiColombo mission to Mercury, two new studies shed light on when the innermost planet formed and the puzzle of its chemical composition. The findings will be presented by Bastien Brugger and Thomas Ronnet at the European Planetary Science Congress (EPSC) 2018 in Berlin. […]
Closest planet ever discovered outside solar...
on September 17, 2018 at 2:07 pm
In August of 2016, astronomers from the European Southern Observatory (ESO) confirmed the existence of an Earth-like planet around Proxima Centauri – the closest star to our solar system. In addition, they confirmed that this planet (Proxima b) orbited within its star's habitable zone. Since then, multiple studies have been conducted to determine if Proxima b could in fact be habitable. […]
End of Colombia conflict may bring new threats to...
on September 12, 2018 at 4:00 am
More than 50 years of internal conflict in Colombia have left behind roughly 8 million victims, including 220,000 dead. Now the country is in the midst of a tenuous ceasefire, thanks to a November 2016 peace treaty between the Colombian government and the largest group of rebels, formerly known as Fuerzas Armadas Revolucionarias de Colombia (FARC). The second largest group of guerrillas, the Ejército de Liberación Nacional (ELN), is also interested in putting an end to the […]
Scientists find evidence for early planetary...
on September 10, 2018 at 4:51 pm
Scientists at Southwest Research Institute studied an unusual pair of asteroids and discovered that their existence points to an early planetary rearrangement in our solar system. […]