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1,000+ results for "Astrophysics"

Now there's an app for NASA's Swift Observatory

The NASA Swift Observatory has released a free iPhone application that provides up-to-date information on gamma-ray burst discoveries, allowing users to track the location of Swift as it orbits Earth. The app also offers an interactive map, gallery of images, and real-time observations.

How to learn a star's true age

Researchers have found a method to measure a star's true age using its spin. Astronomer Soren Meibom presented his findings in a press conference, nearly doubling the age covered by previous studies of younger clusters. The technique involves measuring stellar rotation rates for stars in clusters with known ages.

SourceCenter for Astrophysics | Harvard & Smithsonian·JournalThe Astrophysical Journal Letters·DateMay 24, 2011

Universe's not-so-missing mass

A 22-year-old undergraduate student has made a groundbreaking discovery of the Universe's 'missing mass' by detecting filaments in X-ray data. This finding is significant as it proves the prediction that the mass should be low in density but high in temperature, providing valuable insights into large-scale cosmic structures.

SourceMonash University·JournalMonthly Notices of the Royal Astronomical Society·DateMay 23, 2011

New software to support interest in extreme science

The University of Chicago's Flash Center has released a new version of supercomputer code, FLASH 4-alpha, with enhanced capabilities for simulating high-energy density physics experiments. This will enable researchers at universities and national facilities to investigate fundamental properties of matter under extreme conditions.

2 dying stars reborn as 1

Astronomers have discovered a binary system consisting of two white dwarfs orbiting each other every 39 minutes. The stars are expected to collide and merge in 37 million years, resulting in the formation of a single star. This discovery marks the first time such an event has been observed.

SourceCenter for Astrophysics | Harvard & Smithsonian·JournalMonthly Notices of the Royal Astronomical Society·DateApr 6, 2011

Solar mystery solved

Computer simulations suggest that changes in plasma flow within the Sun, which resembles ocean currents, contribute to prolonged solar minima. The team discovered that a faster flow during the first half of the solar cycle can lead to an extended period without sunspots and weak polar magnetic fields.

Discovery triples number of stars in universe

Astronomers at Yale University have discovered that small red dwarfs are much more prolific than previously believed, increasing the total number of stars in the universe. The discovery found 20 times more red dwarfs in elliptical galaxies than in the Milky Way, with potential implications for galaxy formation and evolution.

SourceYale University·JournalNature·DateDec 1, 2010

Educational researchers target earth and space sciences

A new five-year program at Penn State seeks to enhance the teaching of Earth and space sciences in middle grades and beyond. Researchers will investigate young people's understanding of fundamental scientific concepts and develop professional development approaches for teachers. The goal is to increase student conceptual understanding ...

How to weigh a star using a moon

New work by astrophysicist David Kipping reveals that astronomers can calculate a star's mass using its orbiting planet and moon. By measuring the size of the planet and moon relative to the star and their orbital periods, scientists can use Kepler's Laws of Motion to determine the density of the star.

SourceCenter for Astrophysics | Harvard & Smithsonian·JournalMonthly Notices of the Royal Astronomical Society·DateOct 15, 2010

Planet Neptune not guilty of harassment

Researchers found binary systems in the Kuiper Belt would be destroyed by Neptune's interaction, contradicting previous assumptions. The study suggests the region formed near its present location and remained undisturbed over the age of the solar system.

SourceUniversity of Victoria·JournalThe Astrophysical Journal Letters·DateOct 5, 2010