Last edited by Gakinos
Sunday, July 19, 2020 | History

2 edition of Surface photometry of the planet Mercury found in the catalog.

Surface photometry of the planet Mercury

K. A. HaМ€meen-Anttila

Surface photometry of the planet Mercury

by K. A. HaМ€meen-Anttila

  • 70 Want to read
  • 26 Currently reading

Published by Suomalainen Tiedeakatemia in Helsinki .
Written in English

    Places:
  • Mercury (Planet)
    • Subjects:
    • Planets -- Brightness.,
    • Mercury (Planet) -- Surface.

    • Edition Notes

      Bibliography: p. [19]

      Statementby K. A. Hämeen-Anttila.
      SeriesAnnales Academiae Scientiarum Fennicae. Series A. VI: Physica, 252
      Classifications
      LC ClassificationsQ60 .H529 no. 252, QB611 .H529 no. 252
      The Physical Object
      Pagination18, [1] p.
      Number of Pages18
      ID Numbers
      Open LibraryOL5243638M
      LC Control Number75315325

      Mercury is the innermost and smallest planet in the solar system, orbiting the Sun once every 88 days. It ranges in brightness from about − to in apparent magnitude, but is not easily. A new and detailed picture of Mercury is emerging thanks to NASA’s MESSENGER mission that spent four years in orbit about the Sun’s innermost planet. Comprehensively illustrated by close-up images and other data, the author describes Mercury’s landscapes from a.

      It’s considered to be a “terrestrial planet” because Mercury has a central core, a rock mantle, and a solid crust. Structure and Surface: After Earth, Mercury is the second densest planet in our solar system. Mercury’s core is metallic with a radius of around 1, mi/2, km, which is about 85% of .   Visual studies of Mercury’s indistinct surface markings were once thought to indicate that the planet kept one face to the Sun (as the Moon does to Earth). Thus, for many years, it was widely believed that Mercury’s rotation period was equal to its revolution period of 88 days, making one side perpetually hot while the other was always cold.

      Mercury is the smallest planet with a diameter of 4,km, (2/5ths that of Earth) and only 5% of Earth’s mass. Its gravity on the surface is 1/3rd of Earth’s. However it is larger than any of the dwarf planets (Pluto at 2,km) and our Moon (at 3,km), but it is smaller that the largest moon in the solar system which is Jupiter's. Astronomers have not been able to detect much surface pressure on Mercury, if any. This is due to its very thin atmosphere, meaning there is minimal air pressure on Mercury. Mercury was also at one time falsely believed to be tidally locked, but this was disproven. Venus .


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Surface photometry of the planet Mercury by K. A. HaМ€meen-Anttila Download PDF EPUB FB2

Application of Hapke's () photometric function to observations of Mercury and the Moon confirms the remarkable similarity of photometric properties. Mercury's average photometric behavior is matched best by that of lunar terrains commonly classified as average on the basis of their albedos.

In detail, the Mercurian regolith appears to differ from its lunar counterpart by virtue of (1 Cited by: Mercury's surface is similar in appearance to that of the Moon, showing extensive mare-like plains and heavy cratering, indicating that it has been geologically inactive for billions of e knowledge of Mercury's geology had been based only on the Mariner 10 flyby and terrestrial observations, it is the least understood of the terrestrial l period: 1 d, yr, Mercury.

The surface of Mercury is marred by an impressive number of craters. The Surface photometry of the planet Mercury book is deeper than on most terrestrial planets because of its lack of an atmosphere. Abstract.

Papers are presented on future observations of and missions to Mercury, the photometry and polarimetry of Mercury, the surface composition of Mercury from reflectance spectrophotometry, the Goldstone radar observations of Mercury, the radar observations of Mercury, the stratigraphy and geologic history of Mercury, the geomorphology of impact craters on Mercury, and the cratering Author: Vilas, Faith.

The surface structures of the moon and mercury derived from integrated photometry. [Tapani Pikkarainen] Mercury (Planet) -- Surface. Planets -- Surfaces. View all subjects; More like this: Similar Items Book: All Authors / Contributors: Tapani Pikkarainen.

Find more information about. Cambridge Core - Planetary Science and Astrobiology - Introduction to Planetary Photometry - by Michael K. Shepard Please note, due to essential maintenance online purchasing will be unavailable between and (BST) on 24th February Cited by: 3.

The surface of Mercury. The first images of Mercury revealed a cratered, rocky planet that closely resembled Earth's moon. The early days of the solar system, soon after the rocky planet formed.

Surface Features of Mercury The surface of Mercury, at first glance, looks very much like that of the Moon, but in fact it is different in several ways.

The MESSENGER spacecraft revealed that Mercury has some unique landforms, more smooth plains, and surface compositions (low in iron and high in sulfur) that are unlike any measured on the Moon.

Mercury’s Strange Rotation. Visual studies of Mercury ’s indistinct surface markings were once thought to indicate that the planet kept one face to the Sun (as the Moon does to Earth).

Thus, for many years, it was widely believed that Mercury’s rotation period was equal to its revolution period of 88 days, making one side perpetually hot while the other was always cold. The composition of Mercury's surface is substantially different from that of other terrestrial planets, according to Messenger's scans of the X-rays emanating from the planet.

For instance. Mercury is the closest planet to the Sun and due to its proximity it is not easily seen except during twilight. For every two orbits of the Sun, Mercury completes three rotations about its axis and up until it was thought that the same side of Mercury constantly faced the Sun.

Thirteen times a century Mercury can be observed from the Earth passing across the face of the Sun in an event.

Mercury is the closest planet to our sun, the smallest of the eight planets, and one of the most extreme worlds in our solar systems. Named after. Its “surface” has the fastest winds of any planet in the Solar System at up to 2, kilometers per hour.

Universe Today has a number of articles including surface of. Moons: 0 Mass: % of Earth Diameter: miles Year: 88 Earth days Day: Earth days Temperature: to + degrees F Distance from the Sun: 1st planet from the sun, 36 million miles Type of Planet: Terrestrial (has a hard rocky surface) What is Mercury like.

Now that Pluto is no longer classified as a planet, Mercury is the smallest planet in the solar system. A NASA mission called MErcury Surface, Space ENvironment, Geochemistry, and Ranging (MESSENGER) became the first probe to orbit Mercury in March It investigated the planet's composition, the.

Maps of magnesium/silicon (left) and thermal neutron absorption (right) across Mercury's surface (red indicates high values, blue low) are shown. These maps, together with maps of other elemental abundances, reveal the presence of distinct geochemical terranes.

Volcanic smooth plains deposits are outlined in white. Temperatures on the surface of Mercury are extreme, both hot and cold. During the day, temperatures on Mercury's surface can reach degrees Fahrenheit ( degrees Celsius).

Because the planet has no atmosphere to retain that heat, nighttime temperatures on the surface can drop to minus degrees Fahrenheit (minus degrees Celsius).

Astronomy for Kids - Mercury Mercury - the Winged Messenger Tiny Mercury is the second smallest planet in our solar system, only Pluto is smaller. As a matter of fact, there are two moons in the solar system that are larger than this planet. Jupiter's moon Ganymede and Saturn's moon Titan are both larger than the closest planet to the Size: KB.

Structure and Surface. Mercury is the smallest planet in our solar system. Mercury is a terrestrial planet. It is small and rocky. Mercury doesn't really have an atmosphere. Time on Mercury. A day on Mercury lasts 59 Earth days.

A year on Mercury lasts 88 Earth days. Mercury’s Neighbors. Mercury - Mercury - Surface composition: Messenger used X-ray fluorescence spectra to study the surface composition of Mercury.

It found a high ratio of magnesium to silicon and low ratios of aluminum and calcium to silicon, which showed that the crust was not rich in feldspar like that of the Moon. The surface is rich in sulfur, about 20 times richer than the surfaces of Earth, the Moon, and. This close-up of the cratered surface of Mercury was taken with Messenger's Narrow Angle Camera.

The spacecraft, which went into orbit around .Messenger was launched inflew past the planet twice in and once inand settled into orbit in It mapped the entire surface of Mercury before crashing into the planet in Mercury’s proximity to the Sun has also been exploited to confirm predictions made by relativity theory about the way gravity affects space and time.The surface of Mercury has numerous interesting features, including a variety of craters, ridges, and terrains ranging from heavily cratered to nearly crater free.

These features, and their location across the known planet surface, helps us to understand the evolution of the planet.