Definitions for asteroids
as·ter·oids

WikipediaRate this definition:0.0 / 0 votes

1. asteroids

   An asteroid is a minor planet of the inner Solar System. Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic or icy bodies with no atmosphere. Of the roughly one million known asteroids the greatest number are located between the orbits of Mars and Jupiter, approximately 2 to 4 AU from the Sun, in the main asteroid belt. Asteroids are generally classified to be of three types: C-type, M-type, and S-type. These were named after and are generally identified with carbonaceous, metallic, and silicaceous compositions, respectively. The size of asteroids varies greatly; the largest, Ceres, is almost 1,000 km (600 mi) across and qualifies as a dwarf planet. The total mass of all the asteroids combined is only 3% that of Earth's Moon. The majority of main belt asteroids follow slightly elliptical, stable orbits, revolving in the same direction as the Earth and taking from three to six years to complete a full circuit of the Sun.Asteroids have been historically observed from Earth; the Galileo spacecraft provided the first close observation of an asteroid. Several dedicated missions to asteroids were subsequently launched by NASA and JAXA, with plans for other missions in progress. NASA's NEAR Shoemaker studied Eros, and Dawn observed Vesta and Ceres. JAXA's missions Hayabusa and Hayabusa2 studied and returned samples of Itokawa and Ryugu, respectively. OSIRIS-REx studied Bennu, collecting a sample in 2020 to be delivered back to Earth in 2023. NASA's Lucy, launched in 2021, will study ten different asteroids, two from the main belt and eight Jupiter trojans. Psyche, scheduled for launch in 2023, will study a metallic asteroid of the same name. Near-Earth asteroids can threaten all life on the planet; an asteroid impact event resulted in the Cretaceous–Paleogene extinction. Different asteroid deflection strategies have been proposed; the Double Asteroid Redirection Test spacecraft, or DART, was launched in 2021 and intentionally impacted Dimorphos in September 2022, successfully altering its orbit by crashing into it.

WikidataRate this definition:0.0 / 0 votes

1. Asteroids

   Asteroids is a video arcade game released in November 1979 by Atari Inc. It was one of the most popular and influential games of the Golden Age of Arcade Games, selling 70,000 arcade cabinets. Asteroids uses a vector display and a two-dimensional view that wraps around in both screen axes. The player controls a spaceship in an asteroid field which is periodically traversed by flying saucers. The object of the game is to shoot and destroy asteroids and saucers while not colliding with either, or being hit by the saucers' counter-fire.

Dictionary of Nautical TermsRate this definition:0.0 / 0 votes

1. asteroids

   The name by which the minor planets between the orbits of Jupiter and Mars were proposed to be distinguished by Sir W. Herschel. They are very small bodies, which have all been discovered since the commencement of the present century; yet their present number is over eighty.

How to pronounce asteroids?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say asteroids in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of asteroids in Chaldean Numerology is: 3

2. Pythagorean Numerology

   The numerical value of asteroids in Pythagorean Numerology is: 2

Examples of asteroids in a Sentence

1. Yasuhiro Oba:

   The discovery of uracil in the samples from Ryugu lends strength to current theories regarding the source of nucleobases in the early Earth, the OSIRIS-REx mission by NASA will be returning samples from asteroid Bennu this year, and a comparative study of the composition of these asteroids will provide further data to build on these theories.

2. Miroslav Brož:

   Neither of these two craters could have been caused by the impact that originated the Hygiea family of asteroids whose volume is comparable to that of a 100 km-sized object. They are too small.

3. Dante Lauretta:

   Thats really exciting, you can learn a lot by bringing a sample back from an asteroid, but were going to learn exponentially more by bringing samples back from these two asteroids, which initially looked very similar to each other, may still be related to each other but have had different histories.

4. Fathi Namouni:

   The close proximity of the stars meant that they felt each others' gravity much more strongly in those early days than they do today, this enabled Astronomical Society.These asteroids to be pulled from one star system to another.

5. Ed Lu:

   There is about to be an awful lot more data and observations on asteroids, we're preparing for this flood of data. Together with our partners, we are working to understand how well we are going to be able to determine if an asteroid is going to hit the Earth. More observations means less uncertainty.

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References

1. ^ Wikipedia
   https://en.wikipedia.org/wiki/Asteroids
2. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=asteroids
3. ^ Dictionary of Nautical Terms
   https://www.gutenberg.org/cache/epub/26000/pg26000-images.html#:~:text=asteroids