scholarly journals FRONTIER RESEARCH IN ASTROPHYSICS IN THE GRAVITATIONAL WAVE ERA - II(EXOPLANETS AND EMERGENCE OF LIFE)

2021 ◽  
Vol 53 ◽  
pp. 235-244
Author(s):  
L. Sabau-Graziati ◽  
F. Giovannelli
Keyword(s):  
Gravitational Wave ◽  
Milky Way ◽  
Big Bang ◽  
Habitable Zone ◽  
Terrestrial Life ◽  
The Big Bang ◽  
Emergence Of Life

In this paper we will discuss exoplanets in the habitable zone of the Milky Way, the origin of terrestrial life, and what 'intelligent' humanity is doing, in order to complete the excursion on <i>The Bridge between the Big Bang and Biology</i>, started with the paper I (Giovannelli & Sabau-Graziati, 2020).

scholarly journals The Big Bang Observer: High laser power for gravitational wave astrophysics

2007 ◽  
Author(s):  
Gregory M Harry ◽  
Peter Fritschel ◽  
William Folkner ◽  
Daniel A Shaddock ◽  
E Sterl Phinney
Keyword(s):  
Gravitational Wave ◽  
Laser Power ◽  
Big Bang ◽  
High Laser Power ◽  
High Laser ◽  
The Big Bang

Our Cosmic Origins: From the Big Bang to the Emergence of Life and Intelligence

1999 ◽  
Vol 67 (3) ◽  
pp. 264-265
Author(s):  
Armand Delsemme ◽  
Virginia Trimble
Keyword(s):  
Big Bang ◽  
The Big Bang ◽  
Emergence Of Life

scholarly journals Star formation in the solar neighbourhood

2018 ◽  
Vol 14 (S345) ◽  
pp. 15-22
Author(s):  
Mika Juvela
Keyword(s):  
Star Formation ◽  
Molecular Clouds ◽  
Milky Way ◽  
Big Bang ◽  
Solar Neighbourhood ◽  
Direct Access ◽  
Interstellar Clouds ◽  
Radio Wavelength ◽  
Eventual Collapse ◽  
The Big Bang

AbstractStar formation started as a cosmic process soon after the big bang and still continues in the Milky Way, although at a decreasing rate. The formation of dense interstellar clouds, their fragmentation and eventual collapse lead to the birth of stars. The nearby clouds provide the highest resolution for the study of this process. The progress is closely following the improvement of the infrared and radio-wavelength facilities that enables us to follow even the earliest stages of the star-formation process inside molecular clouds. On the other hand, modern numerical simulations can take into account most of the relevant physics and often provide a more direct access into the general principles of star formation. The comparison of observations and simulations is therefore essential. In this paper, will discuss star formation in the solar neighbourhood, concentrating on the prestellar phases leading up to the formation of protostars.

4. What are planets made of?

2021 ◽  
pp. 47-75
Author(s):  
Raymond T. Pierrehumbert
Keyword(s):  
Life Cycle ◽  
Solar System ◽  
Milky Way ◽  
Planetary Systems ◽  
Big Bang ◽  
Heavy Elements ◽  
Milky Way Galaxy ◽  
First Stars ◽  
The Big Bang ◽  
The Universe

‘What are planets made of?’ assesses what planets are made of, beginning by looking at the life cycle of stars, and the kinds of stars which populate the Universe. Although the first stars of the Universe could not have formed planetary systems, the process did not take long to get under way. The Milky Way galaxy formed not long after the Big Bang and has been building its stock of heavy elements ever since. Thus, our Solar System incorporates ingredients from a mix of myriad expired stars, most of which have been processed multiple times through short-lived stars.

scholarly journals The Big Bang Observer: High Laser Power for Gravitational Wave Astrophysics

2007 ◽  
Author(s):  
Gregory M Harry ◽  
William Folkner ◽  
Peter Fritschel ◽  
E Sterl Phinney ◽  
Daniel A Shaddock
Keyword(s):  
Gravitational Wave ◽  
Laser Power ◽  
Big Bang ◽  
High Laser Power ◽  
High Laser ◽  
The Big Bang

scholarly journals Exploring the origin of low-metallicity stars in Milky-Way-like galaxies with the NIHAO-UHD simulations

2020 ◽  
Vol 500 (3) ◽  
pp. 3750-3762
Author(s):  
Federico Sestito ◽  
Tobias Buck ◽  
Else Starkenburg ◽  
Nicolas F Martin ◽  
Julio F Navarro ◽  
...  
Keyword(s):  
High Resolution ◽  
Milky Way ◽  
Large Population ◽  
Big Bang ◽  
The Other ◽  
Cosmic Evolution ◽  
Early Formation ◽  
History Of ◽  
Low Metallicity ◽  
The Big Bang

ABSTRACT The kinematics of the most metal-poor stars provide a window into the early formation and accretion history of the Milky Way (MW). Here, we use five high-resolution cosmological zoom-in simulations (∼ 5 × 106 star particles) of MW-like galaxies taken from the NIHAO-UHD project, to investigate the origin of low-metallicity stars ([Fe/H] ≤ −2.5). The simulations show a prominent population of low-metallicity stars confined to the disc plane, as recently discovered in the MW. The ubiquity of this finding suggests that the MW is not unique in this respect. Independently of the accretion history, we find that ≳90 per cent of the retrograde stars in this population are brought in during the initial build-up of the galaxies during the first few Gyr after the Big Bang. Our results therefore highlight the great potential of the retrograde population as a tracer of the early build-up of the MW. The prograde planar population, on the other hand, is accreted during the later assembly phase and samples the full galactic accretion history. In case of a quiet accretion history, this prograde population is mainly brought in during the first half of cosmic evolution (t ≲ 7 Gyr), while, in the case of an ongoing active accretion history, later mergers on prograde orbits are also able to contribute to this population. Finally, we note that the MW shows a rather large population of eccentric, very metal-poor planar stars. This is a feature not seen in most of our simulations, with the exception of one simulation with an exceptionally active early building phase.

Our cosmic origins: From the big bang to the emergence of life and intelligence

Endeavour ◽  
1998 ◽  
Vol 22 (4) ◽  
pp. 171-172
Author(s):  
Clifford N. Matthews
Keyword(s):  
Big Bang ◽  
The Big Bang ◽  
Emergence Of Life
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