Monday, November 23, 2015
Thursday, November 5, 2015
Science cartoon on "Bacteria on International Space Station"
Bacteria on International Space Station
No place is completely clean! Either you roam on earth or fly to the International
space station (ISS), you will get bacteria everywhere. Consider it as dirty but
the fact is, scientist found the presence of bacteria on ISS also. Venkateswaran and his team collected samples
from ISS and two clean rooms at the Jet Propulsion Laboratory
(JPL, Pasadena, CA) to study the presence of microflora. They found strong
evidence that specific human skin-associated microorganisms make a substantial
contribution to the ISS microbiome, which is not the case on Earth-based
classrooms. For example, Corynebacterium and Propionibacterium (Actinobacteria)
but not Staphylococcus (Firmicutes) species are dominant on the ISS in
terms of viability and total bacterial community composition. Their finding is
published in Open Access journal Microbiome on 27 Oct 2015.
Original
Paper: Microbiomes of the dust particles collected from the International Space Station and Spacecraft Assembly Facilities
Article on Science
Magazine site: The International Space Station is home to potentially dangerous bacteria
Tuesday, October 27, 2015
Science cartoon on Comet with alcohol
Comet with alcohol
Imagine an ocean of alcohol. Yes, believe me, neither I am drunk, nor comet
researcher Nicolas Biver of the Paris Observatory, France. Nicolas Biver, lead
author of a paper published on Oct. 23 in Science Advances is revealing
the boozy fact about comet lovejoy with the words "We found that comet
Lovejoy was releasing as much alcohol as in at least 500 bottles of wine every
second during its peak activity".
Comet
Lovejoy was having name C/2014Q2 according to catalogue. It was one of the
brightest and most active comets since comet Hale-Bopp in 1997. When it was
moving closest to the sun on last week of January this year, the team of
scientist observed that it was releasing water at rate of 20,000 lit per
second. When scientist observed the shower of water with different wavelength,
they found various kind of organic chemicals. The team found 21 different kind
of molecules in comet, including ethyl alcohol (ethanol, C2H5OH) and the
simplest monosaccharide sugar glycolaldehyde (CH2OHCHO). Presence of alcohol is
reported for the first time.
Article in Science Daily: Researcherscatch Comet Lovejoy giving awayalcohol



