Blogs Posts in Astrometry category; 266 blog posts

Dying Sun-like Stars Leave Whirlpools

Astronomers based at Jodrell Bank Observatory have found evidence that giant whirlpools form in the wake of stars as they move through clouds in interstellar space. Dr Wareing and his colleagues used the COBRA supercomputer to simulate in [...]

Posted On : Apr, 24 2007 | Comments : 0

Astronomers Make Detailed Image Of Giant Stellar Nursery

An international team of astronomers have collaborated to create the most detailed image ever produced of the Rosette Nebula (NGC 2237), a giant stellar nursery. The new image was assembled using data from INT Photometric H-Alpha Survey of [...]

Posted On : Apr, 23 2007 | Comments : 0

Mapping The Invisible: Dark Matter Charted Out To Five Billi...

Most of the matter in the Universe is not the ordinary kind made up of protons, neutrons, and electrons, but an elusive "dark matter" detectable only from its gravity. Like a tenuous gas, dark matter is all around us - it goes thr [...]

Posted On : Apr, 23 2007 | Comments : 0

Hubble Space Telescope Reveals The Aftermath Of 'Star Wars'

An Anglo-American team of astronomers have used the Advanced Camera for Surveys on the Hubble Space Telescope (HST) to obtain the first direct optical images of the aftermath of a recent titanic explosion that took place in a star system 5, [...]

Posted On : Apr, 21 2007 | Comments : 0

'Van Gogh' Simulations Give New Insight Into Turbulent Stars

Stunning simulations that give a multi-dimensional glimpse into the interior of stars show that material bubbling around the convection zone induces a rich spectrum of internal gravity waves in the stable layers above and below. The swirl [...]

Posted On : Apr, 21 2007 | Comments : 0

Astronomers Make Detailed Image Of Giant Stellar Nursery

Posted On : Apr, 21 2007 | Comments : 0

Sky And Telescope

Sky and Telescope: For most people astronomy represents a world that represents a world that is both mysterious and grand – a story about glimming celestial objects and the immensity of cosmos in the age Antiquity astrometry – [...]

Posted On : Apr, 20 2007 | Comments : 0

Giant Pipe Organ In The Solar Atmosphere

Astronomers have found that the atmosphere of the Sun plays a kind of heavenly music. The magnetic field in the outer regions (the corona) of our nearest star forms loops that carry waves and behave rather like a musical instrument. In a t [...]

Posted On : Apr, 20 2007 | Comments : 0

Astronomers Map Out Planetary Danger Zone

Astronomers have laid down the cosmic equivalent of yellow "caution" tape around super hot stars, marking the zones where cooler stars are in danger of having their developing planets blasted away. In a new study from NASA's Spi [...]

Posted On : Apr, 20 2007 | Comments : 0

Scientists Provide First Public Peek At Gravity Probe B Resu...

For the past three years a satellite has circled the Earth, collecting data to determine whether two predictions of Albert Einstein's general theory of relativity are correct. Recently, at the American Physical Society (APS) meeting i [...]

Posted On : Apr, 18 2007 | Comments : 0

Seven Sisters of the Pleiades Pose For Spitzer Space Telesco...

The Seven Sisters, also known as the Pleiades, seem to float on a bed of feathers in a new infrared image from NASA's Spitzer Space Telescope. Clouds of dust sweep around the stars, swaddling them in a cushiony veil. The view is quite dif [...]

Posted On : Apr, 17 2007 | Comments : 0

Space Data Unveils Evidence of Ancient Mega-lake In Northern...

Researchers from the Boston University Center for Remote Sensing used recently acquired topographic data from satellites to reveal an ancient mega-lake in the Darfur province of northwestern Sudan. Drs. Eman Ghoneim and Farouk El-Baz made t [...]

Posted On : Apr, 14 2007 | Comments : 0

Chandra Sees Remarkable Eclipse of Black Hole

Chandra observations of the galaxy NGC 1365 have captured a remarkable eclipse of the supermassive black hole at its center. A dense cloud of gas passed in front of the black hole, which blocked high-energy X-rays from material close to the [...]

Posted On : Apr, 13 2007 | Comments : 0

Dawn Spacecraft Prepared For Mission to Asteroid Belt

The Dawn spacecraft arrived at Astrotech Space Operations in Titusville, Fla., at 9 a.m. EDT today. Dawn, NASA's mission into the heart of the asteroid belt, is at the facility for final processing and launch operations. Dawn's launch perio [...]