NASA’s Chandra X-ray Observatory shared new pictures of space that look red, white, and blue, like a celebration. The timing was for America’s 250th birthday weekend, and the images show amazing objects far beyond Earth.
Chandra doesn’t take regular photos the way a phone camera does. It studies X-rays from space, which are a kind of light our eyes can’t see. Scientists “translate” those invisible signals into colors we can see, so the information becomes a picture people can understand.
The new set includes views of a galaxy cluster, a spiral galaxy called Messier 94, a nebula in our Milky Way, and Cassiopeia A, which is a supernova remnant (the leftover material from a star’s huge burst of energy long ago). Using different colors helps highlight different parts of these objects, so the colors are both fun and useful.
When you look at space pictures like these, it helps to remember that color in science images can be a choice that represents data. Asking “What kind of light did this telescope detect?” and “What do the colors stand for?” is a smart way to think carefully while still enjoying the wow-factor.
Chandra doesn’t take regular photos the way a phone camera does. It studies X-rays from space, which are a kind of light our eyes can’t see. Scientists “translate” those invisible signals into colors we can see, so the information becomes a picture people can understand.
The new set includes views of a galaxy cluster, a spiral galaxy called Messier 94, a nebula in our Milky Way, and Cassiopeia A, which is a supernova remnant (the leftover material from a star’s huge burst of energy long ago). Using different colors helps highlight different parts of these objects, so the colors are both fun and useful.
When you look at space pictures like these, it helps to remember that color in science images can be a choice that represents data. Asking “What kind of light did this telescope detect?” and “What do the colors stand for?” is a smart way to think carefully while still enjoying the wow-factor.