![]() To celebrate the telescope’s 25th anniversary in 2015, Hubble unveiled two new beautiful portraits of the popular Pillars of Creation, revealing how different details can be studied in visible and near-infrared observations. The planet’s aurorae are only visible in the ultraviolet however, the structure of the red spot is well studied at visible wavelengths. ![]() These observations provided insights into the altitude and distribution of the planet’s haze and particles and showed Jupiter’s ever-changing cloud patterns. For example, a new multiwavelength observation of Jupiter released in 2020 by Hubble in ultraviolet/visible/near-infrared light of Jupiter gave researchers an entirely new view of the giant planet. Credit: ESA/HubbleĪstronomers use multi-wavelength imagery to study details that might not otherwise be present in visible images. ![]() Astronomers chose to study NGC 1512 in these colors to emphasize important details in the ring of young star clusters surrounding the core.Įlectromagnetic Spectrum. Each image represents a specific color or wavelength region of the spectrum, from ultraviolet to near-infrared, and shows the wide wavelength range covered by Hubble. Astronomers chose to study NGC 1512 in these colors to emphasize important details in the ring of young star clusters surrounding the core.Ĭredit: NASA, ESA, Dan Maoz (Tel-Aviv University, Israel, and Columbia University, USA)īy exploring the image above, you can see how astronomers have used a set of single-color images to construct the color picture of a ring of star clusters surrounding the core of the galaxy NGC 1512. Celestial bodies emit light at a variety of wavelengths, anywhere from gamma rays to radio waves. These pictures were taken by the NASA/ESA Hubble Space Telescope’s Faint Object Camera (FOC), Wide Field and Planetary Camera 2 (WFPC2), and the Near Infrared Camera and Multi-Object Spectrometer (NICMOS).Įach image represents a specific color or wavelength region of the spectrum, from ultraviolet to near infrared, and shows the wide wavelength region covered by Hubble. Each of these wavelengths is reproduced in a different color and these are combined to form a composite image that well resembles the true emission from that celestial object.Īstronomers have used this set of single-color images, shown around the edge, to construct the color picture (center) of a ring of star clusters surrounding the core of the galaxy NGC 1512. Hubble observes in different wavelength bands, one band at a time, each providing different information on the object under study. They observe primarily in the ultraviolet and visible parts of the spectrum, but also have some near- infrared capabilities. Credit: ESA/Hubbleįor more than three decades, Hubble has studied the Universe using its 2.4-meter primary mirror and its five science instruments. From long to short wavelength, the EM spectrum includes radio waves, microwaves, infrared, visible light, ultraviolet, x-rays and gamma rays. The electromagnetic spectrum is a range of wavelengths of electromagnetic radiation. ![]() We can construct a more complete image of an object’s structure, composition, and behavior by combining observations at different wavelengths than visible wavelengths alone can convey. Shorter wavelengths are referred to as ‘bluer,’ while longer wavelengths are referred to as’redder.’ EM radiation in and near the visible region of the spectrum is generally referred to broadly as ‘light.’ Radio waves have the longest wavelengths, followed by microwaves, infrared, visible light, ultraviolet, x-rays, and finally gamma rays, which have the shortest wavelengths.Ĭelestial objects such as stars, planets, and galaxies all emit electromagnetic waves at various wavelengths, therefore telescopes are built to be sensitive to different sections of the electromagnetic spectrum. The electromagnetic spectrum is loosely divided into divisions based on how the waves behave when they interact with matter, and each division is given a name. An EM wave, like other waves, is defined by its wavelength, and the range of wavelengths we observe, from extremely long to very short, is referred to as the EM spectrum. ![]()
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