expansion of universe – Shamskm: A site to exchange knowledge and solutions

Unusual Supernova is Doubly Unusual for Being Perfectly Normal

By Guest PostJuly 8, 2013Science2011fe data, berkeley lab, big dipper, expansion of universe, greg aldering, palomar transient factory, pinwheel galaxy, rollin thomas, rui pereira, snfactory, snfactory data, snifs, supernova 2011fe, type ia supernova

From the “Backyard Supernova,” the Berkeley Lab-led Nearby Supernova Factory has built a benchmark atlas for normal Type Ia’s

August, 2011, saw the dazzling appearance of the closest and brightest Type Ia supernova since Type Ia’s were established as “standard candles” for measuring the expansion of the universe. The brilliant visitor, labeled SN 2011fe, was caught by the Palomar Transient Factory less than 12 hours after it exploded in the Pinwheel Galaxy in the Big Dipper.

Easy to see through binoculars, 2011fe was soon dubbed the Backyard Supernova. Major astronomical studies from the ground and from space followed close on its heels, recording its luminosity and colors as it rapidly brightened and then slowly faded away. (more…)

Planck Mission Brings Universe into Sharp Focus

By Guest PostMarch 22, 2013Sciencecosmic microwave, dark matter, expansion of universe, planck data, planck mission, space mission

PASADENA, Calif. — The Planck space mission has released the most accurate and detailed map ever made of the oldest light in the universe, revealing new information about its age, contents and origins. (more…)

‘Time Machine’ Will Study the Early Universe

By Guest PostApril 14, 2012Sciencedistant galaxies, early universe, expansion of universe, faint galaxies, low mass stars, radio waves, time machine

UCLA’s Ian McLean, colleagues build most advanced instrument of its kind

A new scientific instrument, a “time machine” of sorts, built by UCLA astronomers and colleagues, will allow scientists to study the earliest galaxies in the universe, which could never be studied before. (more…)

Closest Type Ia Supernova in Decades Solves a Cosmic Mystery

By Guest PostDecember 21, 2011Sciencecosmic mystery, dark energy, expansion of universe, light curve, thermonuclear supernova

Early close-ups of a Type Ia supernova allow Berkeley Lab scientists and their colleagues to picture its progenitor and infer how it exploded

Type Ia supernovae (SN Ia’s) are the extraordinarily bright and remarkably similar “standard candles” astronomers use to measure cosmic growth, a technique that in 1998 led to the discovery of dark energy – and 13 years later to a Nobel Prize, “for the discovery of the accelerating expansion of the universe.” The light from thousands of SN Ia’s has been studied, but until now their physics – how they detonate and what the star systems that produce them actually look like before they explode – has been educated guesswork. (more…)

Physicists Set Strongest Limit on Mass of Dark Matter

By Guest PostNovember 30, 2011Sciencedark energy, dark matter, dark matter collisions, dark matter particle, detecting dark matter, expansion of universe, mass

Brown University physicists have set the strongest limit for the mass of dark matter, the mysterious particles believed to make up nearly a quarter of the universe. The researchers report in Physical Review Letters that dark matter must have a mass greater than 40 giga-electron volts. The distinction is important because it casts doubt on recent results from underground experiments that have reported detecting dark matter

PROVIDENCE, R.I. [Brown University] — If dark matter exists in the universe, scientists now have set the strongest limit to date on its mass. (more…)

UA Alumnus Wins Nobel Prize

By Guest PostOctober 6, 2011Sciencecosmic yardstick, expansion of universe, exploding stars, relative brightness, stars, structure of universe

Brian P. Schmidt, who graduated from the UA in 1989 with a double major in astronomy and physics, shares this year’s Nobel Prize in Physics with two colleagues for a discovery that has rocked our understanding of the cosmos: The universe is expanding at an ever-faster pace.

In the last years of the 20^th century, two teams of researchers set out to race each other to measure the rate of the universe’s expansion, and by extension, unveil how the universe most likely will end. (more…)

Tag Archives: expansion of universe