science kuiper belt kuiper-belt kuiper-belt objects kupier belt objects edgeworth planet solar system astronomy astrophysics paper

A LINK

The Existence of a Planet beyond 50 AU and the Orbital Distribution of the Classical Edgeworth–Kuiper-Belt Objects

vruz: a mars-sized planet in the outskirts of the solar system. cool mindbending conjectures you can find digging anti-scientific articles on cracked.com

Abstract
We study the effects of a Mars-like planetoid with a semimajor axis at about ∼60 AU orbiting embedded in the primordial Edgeworth–Kuiper belt (EKB).
The origin of such an object can be explained in the framework of our current understanding of the origin of the outer Solar System, and a scenario for the orbital transport mechanism to its present location is given.
The existence of such an object would produce a gap in the EKB distribution with an edge at about 50 AU, which seems to be in agreement with the most recent observations. No object at low eccentricity with semimajor axis beyond 50 AU has been detected so far, even though the present observing capabilities would allow an eventual detection

astronomy science physics astrophyiscs pulsar pulsars double pulsar PSR J0737-3039 relativity einstein albert einstein general relativity general theory of relativity gravitational waves

A PHOTO

The rare double pulsar PSR J0737-3039

Is currently the only known double pulsar, it consists of two neutron stars emitting electromagnetic waves in the radio wavelength in a relativistic binary system. The two Pulsars are known as PSR J0737-3039A and PSR J0737-3039B. It was discovered in 2003 at Australia’s Parkes Observatory by an international team led by the radio astronomer Marta Burgay during a high-latitude pulsar survey

The double pulsar system PSR J0737-3039 is being studied in order to test out Einstein’s General Theory of Relativity put forward in 1915. The investigation of double pulsars is a great opportunity as the environment created by warped space-time due to the shift of intense masses is extremely rare, and thus perfect for the testing of Einstein’s theory and the observation of theoretical Gravitational Waves

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astronomy esa mars mars express news science space space exploration solar system planet red planet planets

A PHOTO

ESA’s Mars Express’ new images from Mars: Dry, desolate, and clearly carved by water.

more here and here.

via LATimes and European Space Agency

Science Astronomy Cosmology Cosmos Space Universe

A VIDEO

OH MY GOD, IT’S FULL OF STARS

—via cwnl

Globular Clusters

A spherical collection of stars that orbits a galactic core as a satellite. Globular clusters are very tightly bound by gravity, which gives them their spherical shapes and relatively high stellar densities toward their centers. The name of this category of star cluster is derived from the Latin globulus—a small sphere. A globular cluster is sometimes known more simply as a globular.

Reblogged from Astrotastic!

Science Astronomy Cosmos Universe Nebula Bubble

A PHOTO

Bubble Nebula NGC 7635

—via cwnl

Distance: 7,800 Light Years

Imagine a star 40 times as massive and several hundred thousand times more luminous than our sun? Well, BD +60°2522 is such a star. It’s enormous energy output and powerful stellar winds have blown a titanic bubble of ionized gas measuring 6 light years in diameter. Popularly known as the Bubble Nebula, the strange symmetrically round nebula is the outcome of the prodigious energy output and fierce stellar winds of an unusually powerful star known as a Wolf-Rayet star. Named after the French astronomers Charles Wolf and Georges Rayet

Credit: Robert Gendler

Reblogged from Astrotastic!
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