Images by Date
Images by Category
Solar System
Stars
Exoplanets
White Dwarfs
Supernovas
Neutron Stars
Black Holes
Milky Way Galaxy
Normal Galaxies
Quasars
Galaxy Clusters
Cosmology/Deep Field
Miscellaneous
Images by Interest
Space Scoop for Kids
4K JPG
Multiwavelength
Sky Map
Constellations
Photo Blog
Top Rated Images
Image Handouts
Desktops
Fits Files
Image Tutorials
Photo Album Tutorial
False Color
Cosmic Distance
Look-Back Time
Scale & Distance
Angular Measurement
Images & Processing
AVM/Metadata
Image Use Policy
Web Shortcuts
Chandra Blog
RSS Feed
Chronicle
Email Newsletter
News & Noteworthy
Image Use Policy
Questions & Answers
Glossary of Terms
Download Guide
Get Adobe Reader
More Information
Solar System
X-ray Astronomy Field Guide
Solar System
Questions and Answers
Solar System
Chandra Images
Solar System
Related Podcasts
Tour: Uranus
Tour: Uranus (2021-03-31)
Download Image

More Information

More Images
Smoothed X-ray Image
(Credit: NASA/CXC/MPE/K.Dennerl et al.)


Related Images
Saturn
Saturn
(08 Mar 04)
Mars
Mars
(07 Nov 02)
Jupiter
Jupiter
(27 Feb 02)
Venus:
Venus In A New Light


Venus
Credit: NASA/MPE/K.Dennerl et al.

This Chandra image, the first X-ray image ever made of Venus, shows a half crescent due to the relative orientation of the Sun, Earth and Venus. The X-rays from Venus are produced by fluorescent radiation from oxygen and other atoms in the atmosphere between 120 and 140 kilometers above the surface of the planet. In contrast, the optical light from Venus is caused by the reflection from clouds 50 to 70 kilometers above the surface.

Solar X-rays bombard the atmosphere of Venus, knock electrons out of the inner parts of atoms, and excite the atoms to a higher energy level. The atoms almost immediately return to their lower energy state with the emission of a fluorescent X-ray. A similar process involving ultraviolet light produces the visible light from fluorescent lamps.

This and future X-ray images will enable scientists to examine regions of the Venusian atmosphere that are difficult to investigate otherwise.

Fast Facts for Venus:
Credit  NASA/MPE/K.Dennerl et al.
Scale  Image is 2.25 arcmin across.
Category  Solar System
Coordinates (J2000)  RA | Dec
Constellation  null
Observation Dates  January 10 & 13, 2001
Observation Time  6 hours
Obs. IDs  583, 2411, 2414
Color Code  Intensity
Instrument  LETG
Distance Estimate  110 million kilometers
Release Date  November 29, 2001