Possible Galaxy Evolution Processes

Three Views of Barred Spiral Galaxy NGC 1365

This collage of images in visible and infrared light reveals how the barred spiral galaxy NGC 1365 is feeding material into its central region, igniting massive star birth and probably causing its bulge of stars to grow. The material also is fueling a black hole in the galaxy's...

Four Spiral Galaxies, From Ground (upper) and Hubble (lower)

Astronomers have combined information from the NASA Hubble Space Telescope's visible- and infrared-light cameras to show the hearts of four spiral galaxies peppered with ancient populations of stars. The top row of pictures, taken by a ground-based telescope, represents complete...

Barred Spiral Galaxy NGC 1365

NGC 1365 NICMOS

NGC 1365 DSS

NGC 5838

NGC 5838

NGC 5689

NGC 5689

NGC 5965

Spiral Galaxy NGC 5965

NGC 7537

NGC 7537

The Hubble Tuning Fork – Classification of Galaxies

Galaxies are very important fundamental building blocks of the Universe. Some are simple, while others are very complex in structure. As one of the first steps towards a coherent theory of galaxy evolution, the American astronomer Edwin Hubble, developed a classification scheme...

The Growth of Bulges in Spiral Galaxies

NGC 1365: Ground Image to Hubble Image

The ground-based image in visible light locates the hub area imaged with the Hubble Space Telescope. This barred galaxy feeds material into its hub igniting star birth. The Hubble NICMOS instrument penetrating beneath the dust reveals clusters of young stars.

Space Science Update: The Secret Life of Galaxies (Webcast)