Scientists working at Washington University in St. Louis have discovered two tiny grains of silica (the most common constituent of sand) in meteorites that fell to earth in Antarctica. Because of their isotopic composition these two grains are thought to be pure samples from a massive star that exploded before the birth of the solar system, perhaps the supernova whose explosion is thought to have triggered the collapse of a giant molecular cloud, giving birth to the Sun.
Prof. Hagai Netzer of Tel Aviv University has developed a method that uses black holes to measure distances of billions of light years with a high degree of accuracy. The ability to measure these distances will allow scientists to see further into the past of the universe than ever before.
Astronomers have used NASA's Hubble Space Telescope to photograph the iconic Horsehead Nebula in a new, infrared light to mark the 23rd anniversary of the famous observatory's launch aboard the space shuttle Discovery on April 24, 1990.
The continuing growth in space debris poses an increasing threat to economically vital orbital regions. Next week, hundreds of top experts from across the globe will meet at Europe's largest-ever debris forum to share their latest research findings and discuss potential solutions.
A Cornell researcher and his team have uncovered an oddity in the early cosmos: A newly discovered distant galaxy, born just after the big bang, is starting to furiously churn out stars at peak capacity - despite its young age. The unique galaxy is forming 2,000 times the number of stars as our own Milky Way.
A long Chandra observation reveals the SN 1006 supernova remnant in exquisite detail. By overlapping 10 different pointings of Chandra's field-of-view, astronomers have stitched together a cosmic tapestry of the debris field that was created when a white dwarf star exploded, sending its material hurtling into space as seen from Earth over a millennium ago.
Developing new ways of monitoring Earth is always demanding, but ESA's Aeolus mission has faced some particularly difficult technical challenges. However, with the success of intense high-energy tests on its novel laser there is now light at the end of the tunnel for this unique mission.
Using the compound telescope ALMA, a team of researchers has pinpointed the positions of more than 100 of the most fertile star-forming galaxies. The precise position measurements clear up a mystery about the observed productivity of these objects. They also show that previous studies of these objects have often suffered from mis-identifications, and how precise measurements like these new results avoid this kind of error.
Researchers using the airborne Stratospheric Observatory for Infrared Astronomy (SOFIA) have captured the most detailed mid-infrared images yet of a massive star condensing within a dense cocoon of dust and gas.
To tease out what happens at the boundary of the magnetosphere and to better understand how radiation and energy from the sun can cross it and move closer to Earth, NASA launches spacecraft into this region to observe the changing conditions.
A team led by the University of Warwick has pinpointed a new type of exceptionally powerful and long-lived cosmic explosion, prompting a theory that they arise in the violent death throes of a supergiant star.
Spanish industry is leading the Proba-3 mission, a world first in precise formation flying. This European Space Agency (ESA) project aims to demonstrate that two satellites can move as one single object with sub-millimetre precision. This configuration will enable the creation of enormous space telescopes with the lens and detector hundreds of metres apart.
In an attempt to obtain a comprehensive picture of the solar system's evolution in a much shorter time, mathematicians at the Computing Faculty of the University of the Basque Country (UPV/EHU) have developed new numerical methods which enable simulation calculations to be done faster and more accurately.