Spitzer Space Telescope: Kepler's Supernova Remnant (infrared data): This image shows the remains of Kepler's Supernova, the most recent exploding star to be seen in the Milky Way Galaxy. It was first observed 400 years ago when it was thought to be 'a new star'. In fact, it was the the gas and dust from an exploding star, rapidly expanding. These remnants have now reached a diameter of 14 light years wide and are still expanding at 4 million miles per hour. This image, taken by the Spitzer Space Telescope in the Infrared, shows microscopic dust particles — coloured red — that have been heated by the supernova shock wave.

Name: Kepler's SN
Type: Milky Way : Nebula : Type : Supernova Remnant
Category: Nebulae
Constellation: Ophiuchus
Distance: 13000 light years
Release date: 6 October 2004, 18:00
Credit: NASA, ESA, R. Sankrit and W. Blair (Johns Hopkins University)

Chandra X-ray Observatory: Kepler's Supernova Remnant (close-up, X-ray data): This image shows a section of the remains of Kepler's Supernova, the most recent exploding star to be seen in the Milky Way Galaxy. It was first observed 400 years ago when it was thought to be 'a new star'. In fact, it was the the gas and dust from an exploding star, rapidly expanding. These remnants have now reached a diameter of 14 light years wide and are still expanding at 4 million miles per hour. This image was taken by the Chandra X-ray Observatory.

Name: Kepler's SN
Type: Milky Way : Nebula : Type : Supernova Remnant
Category: Nebulae
Constellation: Ophiuchus
Distance: 13000 light years
Release date: 6 October 2004, 18:00
Credit: NASA, CXC and S. Holt (F.W. Olin College of Engineering)

Hubble Space Telescope: Kepler's supernova remnant (close-up, visible-light data): Four hundred years ago a "new star" appeared in the western sky, rivaling the brilliance of the nearby planets. In fact this 'new star' was a supernova, now named Kepler's supernova, and was the last such object seen to explode in our Milky Way galaxy. Seen here are some of its remains. This image was taken with Hubble's Advanced Camera for Surveys (ACS) with filters onboard to isolate visible light emitted by hydrogen, nitrogen, and oxygen in the remnant but let through starlight from foreground and background stars. The image reveals in Kepler's supernova remnant the detailed knots, which are dense clumps that form behind the outward moving shock wave, and filamentary ribbons, which reveal where the shock wave is encountering lower-density, more uniform interstellar material.

Name: Kepler's SN
Type: Milky Way : Nebula : Type : Supernova Remnant
Category: Nebulae
Constellation: Ophiuchus
Distance: 13000 light years
Release date: 6 October 2004, 18:00
Credit: NASA, ESA, The Hubble Heritage Team (STScI/AURA)

Hubble Spots Rare Triple Eclipse on Jupiter: At first glance, Jupiter looks like it has a mild case of the measles. Five spots - one colored white, one blue, and three black - are scattered across the upper half of the planet. Closer inspection by NASA/ESA Hubble Space Telescope reveals that these spots are actually a rare alignment of three of Jupiter's largest moons - Io, Ganymede, and Callisto - across the planet's face. In this image, the telltale signatures of this alignment are the shadows [the three black circles] cast by the moons. Io's shadow is located just above centre and to the left; Ganymede's on the planet's left edge; and Callisto's near the right edge. Only two of the moons, however, are visible in this image. Io is the white circle in the centre of the image, and Ganymede is the blue circle at upper right. Callisto is out of the image and to the right.

Name: Callisto, Ganymede, Io, Jupiter
Type: Solar System : Planet : Type : Gas GiantSolar System : Planet : Satellite
Category: Solar System
Release date: 4 November 2004, 06:01
Credit: NASA, ESA, and E. Karkoschka (University of Arizona)

Hubble Tracks Asteroid's Sky Trek: While analyzing NASA/ESA Hubble Space Telescope images of the Sagittarius dwarf irregular galaxy (SagDIG), an international team of astronomers led by Simone Marchi, Yazan Momany, and Luigi Bedin were surprised to see the trail of a faint asteroid that had drifted across the field of view during the exposures. The trail is seen as a series of 13 reddish arcs on the right in this August 2003 Advanced Camera for Surveys image.

Name: Sgr Dwarf Galaxy
Type: Solar System : Interplanetary Body : AsteroidLocal Universe : Galaxy : Size : Dwarf
Category: Solar System
Release date: 11 November 2004, 15:00
Credit: NASA, ESA, and Y. Momany (University of Padua)