The newly discovered planet, HD 65086 b, is the lowest mass planet to be directly imaged.
Barclay et al. find a “candidate” planet smaller than Mercury in the Kepler data…will it pass their tests and be confirmed as the smallest known planet?
Shapiro time delays are one of the four tests of general relativity possible in the solar system. Astronomers can use these timing delays to measure properties of binary pulsar systems.
A new brown dwarf system has been discovered only 2 parsec away; Gillon et al. analyze its light curve to study clouds on the surfaces of these stars.
Novae are thermonuclear explosions that occur on the surface of a white dwarf following the accretion of matter from a nearby companion star. The authors seek to understand the geometry and velocity of the ejected material.
Hubble observations of a nearby galaxy show evidence for a universal initial mass function.
Pakmor et al. propose a new mechanism to make Type 1a supernova explosions from a pair of white dwarfs.
By looking for variations in the observed periods for eclipsing binary stars, astronomers have found evidence that a sizable fraction of these systems are actually systems of three or more stars.
With the addition of these 87 new T dwarfs, WISE has now tripled the number of known T dwarfs with spectral type later than T5.
Everything in our galaxy is moving– you, the earth underneath you, the sun, other stars– everything. However, it turns out that figuring out how fast some of these things are moving is surprisingly difficult, and can have Galactic-sized implications!