PIX4572231: Star field in the constellation Sagittarius - Starfield in Sagittarius - Stars in Sagittarius towards the galactic center seen by the Hubble space telescope in February 2004. This field contains approximately 150,000 stars, down to 30th magnitude. The stars in the Galactic disk and bulge have a mixture of colors and masses. Image taken with the Hubble space telescope in february 2004 / Bridgeman Images
PIX4572272: Star V838 Monocerotis 08/02/2004 - V838 Monocerotis 02/2004 - This variable star is located approximately 20,000 years - light from Earth in the constellation Unicorn. In the beginning of 2002, this star illuminated temporarily becoming one of the brightest stars in the sky. Viewed here in February 2004 by the Hubble space telescope, the light echo shows details in the interstellar dust surrounding the star. In January 2002, a variable star in the Monoceros constellation suddenly became 600,000 times more luminous than our Sun, temporarily making it the brightest star in our Milky Way galaxy. The mysterious star, called V838 Monocerotis, has long since faded back to obscurity. Seen here by Nasa's Hubble Space Telescope on February 8, 2004, the light echo around the star has uncovered details in the interstellar dust round the star / Bridgeman Images
PIX4572330: Variable star Mira Ceti view in ultraviolet - Star Mira Ceti seen in ultraviolet - Ultraviolet view of the star Mira of the Whale revealing a long train of material ejected by the large red star. This trail extends over 13 years - light. Mosaic of images obtained by the Galex satellite in November and December 2006. Ultraviolet image of the star Mira taken with the Galex satellite in November and December 2006. In this image, Mira is moving from left to right. It is visible as the small white dot in the bulb shape at right. The shed material can be seen in light blue. The dots in the picture are stars and distant galaxies. The large blue dot at left is a star that is closer to us than Mira. Mira is traveling so fast (130 kilometers per second) that it's creating a bow shock, or build - up of gas, in front of it, as can be seen here at right / Bridgeman Images
PIX4572462: A neutron star at the Florida scale - Size comparison: a neutron star with Florida - A neutron star is a very dense star resulting from the explosion of a massive supernova star. These stars are very small as in this illustration on scale. Neutron stars are incredibly dense remnants of older stars that have blown off their outer gas layers. Many are only as far across as a city. In this cosmic comparison, we see a typical neutron star compared to the gulf coast of the US / Bridgeman Images
PIX4572490: The smallest stars - Artist's view - The smallest stars. Artwork - Comparison to the scale of the smallest stars with Jupiter and the Sun. From left to right: Jupiter, a brown dwarf (same size as Jupiter but 50 times more massive), dwarf L (younger brown dwarf), red dwarf, Sun. From left to right: Jupiter (a failed star), a brown dwarf (same size as Jupiter but 50 times more massive), a “” L”” dwarf (brown dwarf younger), a red dwarf and the sun for comparison / Bridgeman Images
PIX4572539: Brown dwarf with a large debris ring - Artist's view of a brown dwarf star surrounded by a disc of dust and rocks. In the foreground, a primitive exoplanet illuminated by the star. This imaginary high - mass brown dwarf has a larger disk than the previous renderings. The perspective is from the equator of an airless planet, orbiting the brown dwarf at a distance of about 4 million miles. This planet's orbit is very nearly aligned to the plane of the rings, hence the debris appears as a sword - like straight line / Bridgeman Images
PIX4572573: Artist's view of a nova recurrente - Recurrent nova. Artwork - Artist's view of a nova, a white dwarf star that attracts the material of a companion star at the end of life, a red giant, and compresses these gases and then releases a nuclear fusion reaction releasing a huge amount of energy in the form of a brief, extremely bright light. A nova recurrente is a star with at least two nova-type explosions / Bridgeman Images