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Contents of this article
- 1. New words that appeared recently
- 2.What does adaress mean?
- 3. The star of Scorpio
- 4. What do acres, hectares and square kilometers mean?
recent new words
OL: It has several meanings, depending on the occasion:
1, Office Lady, white-collar beauty
2, the abbreviation of ON-LINE, meaning online games
3, OL means agreement, Oh Na
What does adaress mean?
Ares
[5ZEri:z]
n.
[西神] Ares, God of War
Ares
[5ZEri:z]
n.
【西神】 Ares (god of war)
An alias for Mars
Add an s to make it plural
The star of Scorpio
Scorpio The most prominent constellation of the zodiac. Center position: right ascension 16:40, declination -36 degrees. Appears in the southern sky in summer, with the scorpion's tail pointing southeast, between the snake head, centaur, Libra and other constellations. Alpha star (Antares) is a red 1st magnitude star. Open star clusters M6 and M7 are visible to the naked eye. There are 22 stars brighter than 4th magnitude in the constellation. Scorpio, the eighth house. Yellow longitude is from 210 degrees to 240 degrees. The sun enters this house around October 23 every year. The solar term at that time was frost. Antares, the alpha star of Scorpio (the main star of Scorpio), was also called the Great Fire in ancient China. It belongs to Antares of the Seven Stars of the Eastern Blue Dragon (Antares has three stars, namely σ, α, τ in Scorpio, also known as the three stars). Used to determine seasons. "Flowing Fire in July" means that the big Mars will move westward and the weather will be cold. Antares is the fifteenth brightest star in the sky. It is a visual double star. The main star has an apparent magnitude of 1.2. It is an M1I red supergiant with a luminosity of 6000 times that of the sun. The companion star is a blue dwarf star with a brightness of 5.4. The angular distance between stars is 3”. The composite magnitude is 0.96 and the absolute magnitude is -4.7. 600 light years away. In modern astronomy, it is called "Alpha Scorpio [1]". It is a red supergiant star. It is a semi-regular variable star with obvious light variation, and forms a visual binary star system with a blue main sequence star. Antares is also a radio source.
The main star of Antares is actually a semi-regular variable star with a brightness that varies between magnitude 0.9 and 1.8, with a period of 48 years. The surface temperature is 3600 Kelvin, the radius is 700 times that of the sun, the surface area is 360,000 times that of the sun, and its mass is 15.5 times that of the sun.
The English name Antares is a combination of two words: Anti and Ares. Ares is the name of the god of war and Mars in Greek mythology, and the entire word means "rival of Mars." Because the brightness and color of Antares are very similar to Mars, and the orbits of the two stars are in the ecliptic, when Mars moves to Scorpio, two red stars shine in the sky, so Antares got its name. In ancient Persia, Antares, Aldebaran, Regulus, and Fomalhaut were collectively called the four kings. (I wonder if you mistake "heart" for "stars"? )
What do acres, hectares and square kilometers mean?
1. The explanation of mu:
1. China’s municipal unit of land area, one mu equals sixty square feet. Fifteen acres equal one acre.
2. A high place in a field, a ridge: "living in the middle of a ridge".
2. Explanation of hectare:
1. Hectare, metric unit of land area.
2. Letter representation: hm²
3. Hectare is the metric unit of area (International Unit). A one-hectare plot of land is 10,000 square meters, approximately the size of a standard football field.
3. Conversion of acres and hectares:
1 hectare = 10 000 square meters (square meters)
1 hectare = 100 acres (ares)
1 hectare = 15 acres
1 hectare = 2.471 053 8 acres (acres)
1 hectare = 0.01 square kilometers (square kilometers)
1 square kilometer = 100 hectares
1 acres = 0.0666666 hectares = 666.6666 square meters
1 acre = 100 square meters
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