galactic habitable zone in a sentence

• NGC 5964 thus does not have a galactic habitable zone like the Milky Way.
• A galactic bar also has the potential to affect the size of the galactic habitable zone.
• Subsequent studies saw more fundamental revision of the old concept of the galactic habitable zone as an annulus.
• Therefore, the authors established an inner boundary for the galactic habitable zone, located just outside the galactic bulge.
• It has been suggested that for this reason, it may be impossible to properly define a galactic habitable zone.
• In the field of astrobiology, the rate and distribution of supernovas are used to define what is known as the Galactic Habitable Zone.
• Gonzalez coined the term Galactic Habitable Zone based on the work'The Galactic Habitable Zone : Galactic Chemical Evolution', a collaboration with Ward & Brownlee.
• Gonzalez coined the term Galactic Habitable Zone based on the work'The Galactic Habitable Zone : Galactic Chemical Evolution', a collaboration with Ward & Brownlee.
• In that book, the authors used the galactic habitable zone, among other factors, to argue that intelligent life is not a common occurrence in the Universe.
• Gonzalez, " et al . " would halve these numbers; he estimates that at most 5 % of stars in the Milky Way fall in the galactic habitable zone.
• It's difficult to see galactic habitable zone in a sentence .
• A 2006 study by Milan 
  irkovi
  and colleagues extended the notion of a time-dependent galactic habitable zone, analyzing various catastrophic events as well as the underlying secular evolution of galactic dynamics.
• For the Milky Way, the galactic habitable zone is commonly believed to be an annulus with an outer radius of about 10 kiloparsecs and an inner radius close to the Galactic Center, both of which lack hard boundaries.
• Because NGC 6118 has loosely wound spiral open arms, no clear defined spiral arms like the Milky Way galaxy and lacks a central bar, the galaxy thus does not have a galactic habitable zone like the Milky Way.
• The idea of a galactic habitable zone was further developed in 2001 in a paper by Ward and Brownlee, in collaboration with habitable terrestrial planets, thus creating an outward limit to the size of the galactic habitable zone.
• The idea of a galactic habitable zone was further developed in 2001 in a paper by Ward and Brownlee, in collaboration with habitable terrestrial planets, thus creating an outward limit to the size of the galactic habitable zone.
• Even on a habitable planet with enough radioisotopes to heat its interior, various prebiotic molecules are required in order to produce life; therefore, the distribution of these molecules in the galaxy is important in determining the galactic habitable zone.
• High-metallicity stars like our Sun, for example, located at an intermediate location between the low-metallicity galactic halo and the high-radiation galactic center, may be scattered throughout the galaxy, affecting the definition of the galactic habitable zone.
• The Lineweaver team also analyzed the evolution of the galactic habitable zone with respect to time, finding, for example, that stars close to the galactic bulge had to form within a time window of about two billion years in order to have habitable planets.
• A 2008 study by Samantha Blair and colleagues attempted to determine the outer edge of the galactic habitable zone by means of analyzing formaldehyde and carbon monoxide emissions from various giant molecular clouds scattered throughout the Milky Way; however, the data is neither conclusive nor complete.
• The Rare Earth hypothesis argues that the evolution of biological complexity requires a host of fortuitous circumstances, such as a galactic habitable zone, a central star and planetary system having the requisite character, the circumstellar habitable zone, a right sized terrestrial planet, the advantage of a giant guardian like Jupiter and a large natural satellite, conditions needed to ensure the planet has a magnetosphere and plate tectonics, the chemistry of the lithosphere, atmosphere, and oceans, the role of " evolutionary pumps " such as massive glaciation and rare cell, sexual reproduction and the Cambrian explosion.