2007-05-28 05:21:05 · 4 answers · asked by Liz C 1 in Science & Mathematics ➔ Astronomy & Space
Because the dense clouds of dust and gas around the galactic centre block the view in other wave lengths.
2007-05-28 05:25:55 · answer #1 · answered by GeoffG 7 · 1⤊ 0⤋
The region is at the center of the galaxy and occluded by gas dust and debris. IR will penetrate that coud; visible light will not.
2007-05-28 05:28:52 · answer #2 · answered by Gene 7 · 0⤊ 0⤋
http://www.mpifr-bonn.mpg.de/staff/hfalcke/bh/sld5.html
Dust and gas scatter light by Raleigh and Mie mechanisms. Observation then proceeds at wavelengths much longer than the particulates' dimensions for emissions to diffract around them rather than scatter (mcrowave and IR) , or at much shorter wavelengths to go through them (x-ray and gamma ray).
2007-05-28 05:27:34 · answer #3 · answered by Uncle Al 5 · 0⤊ 0⤋
you need wavelengths of light that will penetrate interstellar dust and gas, which there is a whole lot of between us and the center of the galaxy. hope this helps!!!!!
2007-05-28 06:11:12 · answer #4 · answered by Bones 3 · 0⤊ 0⤋