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Biology Articles » Astrobiology


Is there life outside of Earth? Is there a future for humankind in outer space? These are but a few among the many questions that this field of science attempts to answer. Exobiology (also Astrobiology) is an interdisciplinary field that combines astronomy, biology and geology to study the origins, evolution, distribution and future of life in the universe. Thus, it is concerned with how life began, the search for extraterrestrial life, the effects of outer space on living organisms, the future of the Earth, and the possible habitability elsewhere in the universe .

Astrobiology Articles

Death of a star
For the first time a star has been observed in real-time as it goes supernova a mind bogglingly powerful explosion as the star ends its life, the resulting cosmic eruption briefly outshining an entire galaxy.

Date: 15 May 2007, Rating: 6.33

Extrasolar planets
Sun-like star, as well as over two dozen subsequently detected extrasolar planets, were all identified by observing periodic variations of the Doppler shift of light emitted by the stars to which they are bound.

Date: 16 Jan 2007, Rating: 8.50, 3 pages

The distribution of radio plasma in time and space
In this paper, the prevalence of jet-ejected plasma, in particular that which has not been properly accounted for in the past is discussed.

Date: 16 Jan 2007, Rating: 4.50, 7 pages

Mechanical heating by active galaxies
In this paper how recent X-ray observations of the intracluster medium
suggest a particular mode of heating by AGN is discussed.

Date: 16 Jan 2007, Rating: 10.00, 6 pages

Organic matter in meteorites
This review discusses the organic content of primitive meteorites and their relevance to the build up of biomolecules.

Date: 15 Jan 2007, Rating: 3.80, 11 pages

Bacillus odysseyi sp. nov., a round-spore-forming bacillus isolated from the Mars Odyssey spacecraft
A round-spore-forming Bacillus species that produces an exosporium was isolated from the surface of the Mars Odyssey spacecraft.

Date: 15 Jan 2007, Rating: 4.00, 7 pages

Localization and Physical Property Experiments Conducted by Opportunity at Meridiani Planum
The Mars Exploration Rover (MER) Mission required accurate tracking of the location of Opportunity to ensure efficient drives and to place measurements in proper geological context.

Date: 15 Jan 2007, Rating: not rated, 3 pages

Planetary exploration in the time of astrobiology: Protecting against biological contamination
Continuing discoveries about life on Earth and the return of data suggesting the presence of liquid water environments on or under the surfaces of other planets and moons have combined to suggest the significant possibility that extraterrestrial life may

Date: 15 Jan 2007, Rating: 5.50, 8 pages

ESA's Cluster Mission Establishes Why Earth's Aurorae Shine
ESA's Cluster mission has established that high-speed flows of electrified gas, known as bursty bulk flows, in the Earth's magnetic field are the carriers of decisive amounts of mass, energy and magnetic perturbation towards the Earth during magnetic subs

Date: 15 Jan 2007, Rating: 2.00

Scientist-astronaut Sends T-cells Into Space
A former astronaut and researcher will be traveling to the Cosmodrome space-launch site at Baikonur, Kazakhstan, this Saturday, Sept. 2, 2006, to prepare a crucial experiment designed to demonstrate how human immune response is suppressed in the weightles

Date: 15 Jan 2007, Rating: 5.00

Hubble Captures A Rare Eclipse On Uranus
This image is a never-before-seen astronomical alignment of a moon traversing the face of Uranus, and its accompanying shadow.

Date: 15 Jan 2007, Rating: 1.50

Cassiopeia A - The colourful aftermath of a violent stellar death
It is the youngest known remnant from a supernova explosion in the Milky Way. The new Hubble image shows the complex and intricate structure of the star’s shattered fragments.

Date: 15 Jan 2007, Rating: 9.00

Planet Or Failed Star? One Of Smallest Stellar Companions Seen By Hubble
Astronomers using the NASA/ESA Hubble Space Telescope have photographed one of the smallest objects ever seen around a normal star beyond our Sun.

Date: 15 Jan 2007, Rating: 2.50

Survival of Spacecraft-Associated Microorganisms under Simulated Martian UV Irradiation
In this study, the endospores of isolated spore-forming bacteria from a growing collection of spacecraft and associated environmental isolates was screened for resistance to UV irradiation at 254 nm

Date: 21 Sep 2006, Rating: 1.00, 8 pages

Microbial origin of excess methane in glacial ice and implications for life on Mars
Methane trapped in the 3,053-m-deep Greenland Ice Sheet Project 2 ice core provides an important record of millennial-scale climate change over the last 110,000 yr.

Date: 21 Sep 2006, Rating: not rated, 6 pages

Bacillus nealsonii sp. nov., isolated from a spacecraft-assembly facility, whose spores are -radiation resistant
One of the spore-formers isolated from a spacecraft-assembly facility, belonging to the genus Bacillus, is described on the basis of phenotypic characterization, 16S rDNA sequence analysis and DNA–DNA hybridization studies.

Date: 21 Sep 2006, Rating: not rated, 7 pages

Microbial Diversity and Its Relationship to Planetary Protection
In summary, planetary protection issues of great importance include minimization of the inevitable deposition of Earth microbes by humans on the surface of Mars or other potentially life-bearing locations in our solar system...

Date: 21 Sep 2006, Rating: not rated, 4 pages

Models Show One Nearby Star System Could Host Earth-like Planet
The steady discovery of giant planets orbiting stars other than our sun has heightened speculation that there could be Earth-type worlds in nearby planetary systems capable of sustaining life.

Date: 20 Sep 2006, Rating: not rated

Earth-like Planets May Be More Common Than Once Thought
More than one-third of the giant planet systems recently detected outside Earth's solar system may harbor Earth-like planets, many covered in deep oceans with potential for life, according to a new study

Date: 20 Sep 2006, Rating: not rated

AKARI's View On Birth And Death Of Stars
AKARI, the Japan Aerospace Exploration Agency (JAXA) infrared astronomical satellite with ESA participation, is continuing its survey of the sky and its mapping of our cosmos in infrared light.

Date: 20 Sep 2006, Rating: 5.00