An unusual comet is confirmed to be only the second interstellar object ever observed in our skies, astronomers say
It has been named 2I/Borisov by the International Astronomical Union's Minor Planet Center. And it's anywhere between 1.2 and 10 miles in diameter, Karen Meech and her colleagues at the University of Hawaii say.Observations by
/ESA Hubble Space Telescope, showing two narrow, comet-like tails of debris that tell us that the asteroid is slowly undergoing self-destruction. The bright streaks surrounding the asteroid are background stars. The Gault asteroid is located 214 million miles from the Sun, between the orbits of Mars and Jupiter.Hide Caption 37 of 130 Photos: Wonders of the universeThe ghostly shell in this image is a supernova, and the glowing trail leading away from it is a pulsar.
/ESA Hubble Space Telescope is celebrating its 28th anniversary in space with this stunning and colorful image of the Lagoon Nebula 4,000 light-years from Earth. While the whole nebula is 55 light-years across, this image only reveals a portion of about four light-years. Hide Caption 76 of 130 Photos: Wonders of the universeThis is a more star-filled view of the Lagoon Nebula, using Hubble's infrared capabilities.
."Although far too small to be visible in the image, the part of Earth facing Cassini at the time was the southern Atlantic Ocean." Much like the famous "pale blue dot" image captured by Voyager 1 in 1990, we are but a point of light when viewed from the furthest planet in the solar system.Hide Caption 84 of 130 Photos: Wonders of the universe
's Mars Reconnaissance Orbiter. The orbiter's camera takes images in three wavelength bands: infrared, red and blue-green. Mars was about 127 million miles from Earth when the images were taken.Hide Caption 87 of 130 Photos: Wonders of the universePGC 1000714 was initially thought to be a common elliptical galaxy, but a closer analysis revealed the incredibly rare discovery of a Hoag-type galaxy. It has a round core encircled by two detached rings.
's Hubble Space Telescope captured this image of the Crab Nebula and its"beating heart," which is a neutron star at the right of the two bright stars in the center of this image. The neutron star pulses 30 times a second. The rainbow colors are visible due to the movement of materials in the nebula occurring during the time-lapse of the image.
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