該圖片為維基共享資源的特色圖片(Featured pictures)。它被認定為最佳圖像之一。 维基百科  該圖片為西班牙文維基百科的特色圖片(Recursos destacados)。它被認定為最佳圖像之一。  該圖片為波斯文維基百科的特色圖片(نگاره‌های برگزیده)。它被認定為最佳圖像之一。  該圖片為土耳其文維基百科的特色圖片(Seçkin resimler)。它被認定為最佳圖像之一。 如果您還有可以在合適授權條款下發表的相似品質的圖像，歡迎您上傳、標註授權條款並提名之。

This image was selected as picture of the day on Vietnamese Wikipedia.

摘要

Original caption

MESSENGER's Wide Angle Camera (WAC), part of the Mercury Dual Imaging System (MDIS), is equipped with 11 narrow-band color filters. As the spacecraft receded from Mercury after making its closest approach on January 14, 2008, the WAC recorded a 3x3 mosaic covering part of the planet not previously seen by spacecraft. The color image shown here was generated by combining the mosaics taken through the WAC filters that transmit light at wavelengths of 1000 nanometers (infrared), 700 nanometers (far red), and 430 nanometers (violet). These three images were placed in the red, green, and blue channels, respectively, to create the visualization presented here. The human eye is sensitive only across the wavelength range from about 400 to 700 nanometers. Creating a false-color image in this way accentuates color differences on Mercury's surface that cannot be seen in black-and-white (single-color) images.

Color differences on Mercury are subtle, but they reveal important information about the nature of the planet's surface material. A number of bright spots with a bluish tinge are visible in this image. These are relatively recent impact craters. Some of the bright craters have bright streaks (called "rays" by planetary scientists) emanating from them. Bright features such as these are caused by the presence of freshly crushed rock material that was excavated and deposited during the highly energetic collision of a meteoroid with Mercury to form an impact crater. The large circular light-colored area in the upper right of the image is the interior of the Caloris basin. Mariner 10 viewed only the eastern (right) portion of this enormous impact basin, under lighting conditions that emphasized shadows and elevation differences rather than brightness and color differences. MESSENGER has revealed that Caloris is filled with smooth plains that are brighter than the surrounding terrain, hinting at a compositional contrast between these geologic units. The interior of Caloris also harbors several unusual dark-rimmed craters, which are visible in this image. The MESSENGER science team is working with the 11-color images in order to gain a better understanding of what minerals are present in these rocks of Mercury's crust.

The diameter of Mercury is about 4880 kilometers (3030 miles). The image spatial resolution is about 2.5 kilometers per pixel (1.6 miles/pixel). The WAC departure mosaic sequence was executed by the spacecraft from approximately 19:45 to 19:56 UTC on January 14, 2008, when the spacecraft was moving from a distance of roughly 12,800 to 16,700 km (7954 to 10377 miles) from the surface of Mercury.

授權條款

	本作品由NASA創作，屬於公有領域。根據NASA的版權政策：“NASA的創作除非另有聲明否則不受版權保護。”（參見：Template:PD-USGov/zh，NASA版權政策或JPL圖像使用政策）
	警告: 使用NASA的logo，徽標等受到美國法律14 CFR 1221的限制。 NASA網站還提供大量來自蘇聯/俄羅斯航天機構，以及其他非美國的太空機構的圖像。這些圖像不一定屬於公有領域。 根據哈勃空間望遠鏡的數據制作的素材，如果不是明確聲明由STScI提供，則可能受到版權保護。[1] 參看{{PD-Hubble}}和{{Cc-Hubble}}或{{Spacetelescope.org}}。 SOHO (ESA & NASA)聯合項目的探測器所創作的所有內容受到著作權保護，並且進行非教育性質的商業應用需要授權。[2] 每日一天文圖（APOD）網站的特色圖片可能受到著作權保護。[3]

原始上傳日誌

This image is a derivative work of the following images:

• Image:Mercury_in_color_-_Prockter07.jpg licensed with PD-USGov-NASA, PD-USGov-NASA/copyright
  • 2008-02-18T06:16:52Z Superm401 3000x2025 (1325745 Bytes) Reverted to version as of 01:42, 31 January 2008
  • 2008-01-31T01:52:50Z Kwamikagami 2072x2025 (1091977 Bytes)
  • 2008-01-31T01:42:24Z Kwamikagami 3000x2025 (1325745 Bytes) {{Information |Description=Full color image of Mercury from first MESSENGER flyby |Source=NASA/APL |Date=2008 Jan 30 |Author=NASA |Permission=public |other_versions=color version of [[Image:MESSENGER first photo of unseen sid

Uploaded with derivativeFX