Mercury is the first planet from the Sun and the smallest in the Solar System.
Merkurius atau Utarid merupakan planet terkecil di Tata Surya sekaligus yang terdekat dari Matahari.
Consequently, one solar day (sunrise to sunrise) on Mercury lasts for around 176 Earth days: twice the planet's sidereal year.
1 hari matahari (solar day) di Merkurius berlangsung sangat lama yaitu sekitar 176 hari bumi.
Mercury's density can be used to infer details of its inner structure.
Kepadatan Merkurius digunakan untuk menduga struktur dalamnya.
Hence, Mercury's core occupies about 57% of its volume; for Earth this proportion is 17%.
Para ahli bumi menaksir bahwa inti Merkurius menempati 42 % dari volumenya (inti Bumi hanya menempati 17% dari volume Bumi).
It is thought that these were formed as Mercury's core and mantle cooled and contracted at a time when the crust had already solidified.
Diduga perbukitan ini terbentuk karena inti dan mantel Merkurius mendingin dan menciut pada saat kerak sudah membatu.
Mercury's core has a higher iron content than that of any other planet in the Solar System, and several theories have been proposed to explain this.
Merkurius mengandung besi lebih banyak dari planet lainnya di tata surya dan beberapa teori telah diajukan untuk menjelaskannya.
The most widely accepted theory is that Mercury originally had a metal–silicate ratio similar to common chondrite meteorites, thought to be typical of the Solar System's rocky matter, and a mass approximately 2.25 times its current mass.
Teori yang paling luas diterima adalah bahwa Merkurius pada awalnya mempunyai perbandingan logam-silikat mirip dengan meteor Kondrit umumnya dan mempunyai massa sekitar 2,25 kali massanya yang sekarang.
Alternatively, Mercury may have formed from the solar nebula before the Sun's energy output had stabilized.
Teori yang lain menyatakan bahwa Merkurius mungkin telah terbentuk dari nebula Matahari sebelum energi keluaran Matahari telah stabil.
It would initially have had twice its present mass, but as the protosun contracted, temperatures near Mercury could have been between 2,500 and 3,500 K and possibly even as high as 10,000 K. Much of Mercury's surface rock could have been vaporized at such temperatures, forming an atmosphere of "rock vapor" that could have been carried away by the solar wind.
Merkurius pada awalnya mempunyai dua kali dari massanya yang sekarang, tetapi dengan mengambangnya protomatahari, suhu di sekitar merkurius dapat mencapai sekitar 2500 sampai 3500 Kelvin dan mungkin mencapai 10000 Kelvin.
The resonance makes a single solar day (the length between two meridian transits of the Sun) on Mercury last exactly two Mercury years, or about 176 Earth days.
1 hari matahari (solar day) di Merkurius berlangsung sangat lama yaitu sekitar 176 hari bumi.
Due to Mercury's 3:2 spin-orbit resonance, a solar day lasts about 176 Earth days.
1 hari matahari (solar day) di Merkurius berlangsung sangat lama yaitu sekitar 176 hari bumi.
Mercury nomenclature and map with feature names from the USGS/IAU Gazetteer of Planetary Nomenclature Equirectangular map of Mercury Archived
Mercury nomenclature dan map with feature names dari USGS/IAU Gazetteer of Planetary Nomenclature Equirectangular map of Mercury Diarsipkan 2016-05-20 di Wayback Machine.