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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
- Space Rocks! (1/4/2019) - It was a fantastic holiday season for space fans! In fact, there was so much going on, it was almost impossible to keep up with it all. According to your news sources and interests, you have probably heard about at least some of the amazing things that happened, but chances are you haven’t heard about … Continue reading Space Rocks!
- Get Lost in Space! (9/14/2018) - Way back in August, in anticipation of the start of a new school year, I set out to update the pages on this site related to space. Those pages tend to be popular among the teachers and students who use Cosma, and I happen to enjoy updating them, too. It sounded like a short, fun … Continue reading Get Lost in Space!
- Asteroids Galore! (6/27/2018) - Head’s up! You’re going to hear a lot about asteroids over the next week or so. The good news is that none of it is related to any specific asteroid hitting us. This media blitz is due to a trifecta of asteroid related events this week. One big reason you’ll hear so much about asteroids … Continue reading Asteroids Galore!
- Octopuses from Space! (5/20/2018) - Did you hear the one about the octopuses from space? It sounds like the title of a cheesy sci-fi movie, doesn’t it? But it isn’t, this time, or at least, yet. Instead, it’s actually an oddball theory that’s been put forth in a recently published “scientific” article that’s getting quite a lot of buzz in … Continue reading Octopuses from Space!
- Asteroids Everywhere (6/30/2017) - Friday, June 30 is Asteroid Day, so you are going to be hearing a LOT about Asteroids over the next day or so (see Asteroid Day.org, NASA, YouTube and Wikipedia). The reason Asteroid Day falls on this date is because it’s the anniversary of the 1908 “Tunguska event” when scientists believe a 50 meter wide … Continue reading Asteroids Everywhere
These are organized by a classification scheme developed exclusively for Cosma. More…
asteroid : any of the small rocky celestial bodies found especially between the orbits of Mars and Jupiter — Webster
Asteroids are a class of Small Solar System Bodies in orbit around the Sun. They have also been called planetoids, especially the larger ones. These terms have historically been applied to any astronomical object orbiting the Sun that did not show the disk of a planet and was not observed to have the characteristics of an active comet, but as small objects in the outer Solar System were discovered, their volatile-based surfaces were found to more closely resemble comets, and so were often distinguished from traditional asteroids. Thus the term asteroid has come increasingly to refer specifically to the small rocky–icy and metallic bodies of the inner Solar System out to the orbit of Jupiter. They are grouped with the outer bodies—centaurs, Neptune trojans, and trans-Neptunian objects—as minor planets, which is the term preferred in astronomical circles.
There are millions of asteroids, many thought to be the often shattered remnants of planetesimals, bodies within the young Sun’s solar nebula that never grew large enough to become planets. A large majority of known asteroids orbit in the asteroid belt between the orbits of Mars and Jupiter or co-orbital with Jupiter (the Jupiter Trojans). However, other orbital families exist with significant populations, including the near-Earth asteroids. Individual asteroids are classified by their characteristic spectra, with the majority falling into three main groups: C-type, S-type, and M-type. These were named after and are generally identified with carbon-rich, stony, and metallic compositions, respectively. — Wikipedia
Near-Earth Objects (Minor Planet Center, International Astronomical Union)
Near Earth Asteroids (Minor Planet Center, International Astronomical Union)
Potentially Hazardous Asteroids (Minor Planet Center, International Astronomical Union)
1+ KM Near-Earth Objects (Minor Planet Center, International Astronomical Union)
Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.
- NASA's Lucy mission: A journey to the young solar...on October 7, 2021 at 11:26 am
NASA's Lucy spacecraft will launch in October 2021 on a 12-year journey to Jupiter's Trojan asteroids. The Lucy mission will include three Earth gravity assists and visits to eight asteroids.
- Highly porous rocks are responsible for asteroid...on October 6, 2021 at 9:10 pm
Scientists thought asteroid Bennu's surface would be like a sandy beach, abundant in fine sand and pebbles, which would have been perfect for collecting samples. Past telescope observations from Earth's orbit had suggested the presence of large swaths of fine-grain material called fine regolith that's smaller than a few centimeters.
- Dwarf planet Vesta serves as a window to the...on October 6, 2021 at 7:03 pm
The dwarf planet Vesta is helping scientists better understand the earliest era in the formation of our solar system. Two recent papers involving scientists from the University of California, Davis, use data from meteorites derived from Vesta to resolve the "missing mantle problem" and push back our knowledge of the solar system to just a couple of million years after it began to form. The papers were published in Nature Communications Sept. 14 and Nature Astronomy Sept. 30.
- Where Earth's water comes from, preparing for...on October 6, 2021 at 7:02 pm
Two NAU astronomers presented groundbreaking research at the annual meeting of the Division for Planetary Sciences, a branch of the American Academy of Sciences.
- Late-time small-body asteroid disruptions can...on October 5, 2021 at 7:57 pm
If an asteroid is determined to be on an Earth-impacting trajectory, scientists typically want to stage a deflection, where the asteroid is gently nudged by a relatively small change in velocity, while keeping the bulk of the asteroid together.
- Study of prior research suggests there is a swarm...on October 5, 2021 at 2:10 pm
A pair of space scientists, one with the University of Antioquia, the other the University of Salento, has found evidence of a swarm of large asteroids hidden in the Taurid complex. Ignacio Ferrín and Vincenzo Orofino have written a paper describing their findings in the journal Planetary and Space Science.
- UAE to launch probe targeting asteroid between...on October 5, 2021 at 9:55 am
The United Arab Emirates on Tuesday announced plans to send a probe to land on an asteroid between Mars and Jupiter to collect data on the origins of the universe, the latest project in the oil-rich federation's ambitious space program.
- Science of Psyche: Unique asteroid holds clues to...on October 4, 2021 at 4:54 pm
Set to launch next year, NASA's Psyche mission marks the first time the agency has set out to explore an asteroid richer in metal than rock or ice.
- Is new finding an asteroid or a comet? It's bothon October 4, 2021 at 4:49 pm
The newest known example of a rare type of object in the Solar System—a comet hidden among the main-belt asteroids—has been found and studied, according to a new paper by Planetary Science Institute Senior Scientist Henry Hsieh.
- Simulations suggest an Earth or Mars size planet...on October 4, 2021 at 1:01 pm
A team of space scientists has published a paper in Annual Review of Astronomy and Astrophysics suggesting that there may be an Earth- or Mars-sized planet orbiting beyond Neptune. They further suggest that simulations of the creation of the solar system show that such a planet may have been pushed from the outer regions of the solar system by the gas giants.