Description: A small satellite galaxy, seen as an orange blob, gets stretched into a ribbon of stars as it’s pulled apart by a larger spiral galaxy in an artist’s impression.
Previously, astronomers had used detailed computer models to show how tidal streams and other signatures of galaxy digestion might look around spiral galaxies. The new survey has shown that all the predicted features actually exist in the universe—strong evidence that current models of galaxy evolution are on the right track, the study authors say.
What’s happening above theCotopaxi volcanoinEcuador? Quite a bit, from the looks of theabove one-night, time-lapse movie, taken earlier this month. The majestic volcano is first seen through breaks in fast moving clouds as the movie begins. Soon the clouds have dissipated and a sky filled with stars seems to rotate about the snow-peaked volcano’s peak. Thebandofour Milky Way Galaxy, the darkCoal Sack nebula, and theSouthern Crosscan all be seen overhead.Satellites streakby from several directions. Soon thin clouds roll by and seem to make the brightest stars sparkle. On the volcano, the lights of climbers flash. Near the end of the movie, abright airplane passesover the peak with aresidual trailseen drifting away.