spacer
 
Advanced Search
Astrobiology Magazine Facebook  Astrobiology Magazine Twitter
Sort by  
Hot Topic Deep Space Cosmic Evolution
 
Donuts and Banana Splits
Topic: Cosmic Evolution
06/30/06
Recent discoveries add yet more variety to the bewildering diversity of protoplanetary disk shapes -- ranging from donuts to spirals -- that astronomers are finding as they study the birthing grounds of planets around other stars.

The Ratio of the Spheres
Topic: Cosmic Evolution
06/16/06
Each of our Solar System's outer gaseous planets hosts a system of multiple satellites, and these objects include Jupiter's volcanic Io and Europa with its believed subsurface ocean, as well as Titan with its dense and organic-rich atmosphere at Saturn.

The Aromatic World
Topic: Cosmic Evolution
06/15/06
In a paper soon to be published in the journal Astrobiology, Pascale Ehrenfreund and colleagues suggest that polycyclic aromatic hydrocarbons (PAHs), organic molecules found throughout space, may have been important multi-taskers in the origin of life on Earth.

Red Dwarfs and Super-Earths
Topic: Cosmic Evolution
06/13/06
A new explanation for forming super-Earths suggests that they are likely to be found orbiting red dwarf stars- the most abundant star than gas giant planets. The theory by Dr. Alan Boss, describes mechanism whereby UV radiation from nearby massive star strips off a planet's gaseous envelope, exposing a super-Earth.

'Planemo' Spawn
Topic: Cosmic Evolution
06/10/06
Forget our traditional ideas of where a planetary system forms - new research led by a University of Toronto astronomer reveals that planetary nurseries can exist not only around stars but also around objects that are themselves not much heftier than Jupiter. It suggests that miniature versions of solar system may circle objects 100 times less massive than sun.

FUSEing Carbon Planets
Topic: Cosmic Evolution
06/08/06
Scientists using NASA's Far Ultraviolet Spectroscopic Explorer, or FUSE, have discovered abundant amounts of carbon gas in a dusty disk surrounding a well-studied young star named Beta Pictoris. The star's planets could be exotic, carbon-rich worlds of graphite, diamond, and methane.

Dead Zones to the Rescue
Topic: Cosmic Evolution
06/06/06
Astronomers from McMaster University in Hamilton, Ontario find that "dead zones"- which typically extend out to 13 astronomical units from the central star of an extrasolar planetary system - can significantly slow planetary migration so that planets are not lost to the systems.

Like Planet, Like Sun
Topic: Cosmic Evolution
05/31/06
A team of European astronomers, led by T. Guillot (CNRS, Observatoire de la Côte d'Azur, France), will publish a new study of the physics of Pegasids (also known as hot Jupiters) in Astronomy & Astrophysics. They found that the amount of heavy elements in Pegasids is correlated to the metallicity of their parent stars.

Beta Pic's Dust Bunnies
Topic: Cosmic Evolution
04/21/06
Astronomers have produced the most detailed picture yet of a dust disk surrounding a nearby star. Observations of the disk around Beta Pictoris suggest that asteroid and comet-like objects are colliding to produce fluffy icy dust-balls the size of bacteria.

One Less Thing to Worry About
Topic: Cosmic Evolution
04/19/06
Are you losing sleep at night because you're afraid that all life on Earth will suddenly be annihilated by a massive dose of gamma radiation from the cosmos? Well, now you can rest easy.

Previous  | 40  | 41  | 42  | 43  | 44  | 45  | 46  | 47  | 48  | 49  | 50  | Next  
About Us
Contact Us
Links
Sitemap
Podcast Rss Feed
Daily News Story RSS Feed
Latest News Story RSS Feed
Learn more about RSS
Chief Editor & Executive Producer: Helen Matsos
Copyright © 2014, Astrobio.net