Hubble completa 25 anos: veja lindas imagens feitas pelo telescópio
Telescópio Hubble da Nasa (agência espacial americana) registra uma parte da nebulosa da Tarântula, localizada na Grande Nuvem de Magalhães, que é uma pequena galáxia próxima da Via Láctea. Segundo a Nasa, ela é vista no céu como uma mancha desfocada. Fotografia: Hubble/Nasa/ESA/Reuters.
Tipped toward Earth and illuminated by the star, these rings look like ellipses in images taken with NASA's Spitzer Space Telescope. The massive star at the center, which lies within the constellation Sagittarius, is about 7,200 light-years from Earth.
(NASA) What created this unusual space ribbon? Back in the year 1006 AD, light reached Earth from a stellar explosion in the constellation of the Wolf (Lupus), creating a “guest star” in the sky that appeared brighter than Venus and lasted for over two years. The supernova, now cataloged at SN 1006, occurred about 7,000 light years away and has left a large remnant that continues to expand and fade today.
This giant spiral disk of stars, dust and gas is 170,000 light-years across, or nearly twice the diameter of our Milky Way galaxy. M101 is estimated to contain at least one trillion stars. About 100 billion of them could be similar to our Sun.
About 1,500 galaxies are visible in this deep view of the universe, taken by allowing the Hubble Space Telescope to stare at the same tiny patch of sky for 10 consecutive days in 1995. The image covers an area of sky only about width of a dime viewed from 75 feet away.
This may be the youngest galaxy ever seen; this "late bloomer" may not have begun active star formation until about 13 billion years after the Big Bang. Called I Zwicky 18, it may be as young as 500 million years old. It has gone through several sudden bursts of star formation — the first only some 500 million years ago and the latest only 4 million years ago. The galaxy is classified as a dwarf irregular galaxy and is much smaller than our Milky Way.