Results 11 to 20 of about 11,482 (311)

The Terrestrial Planet Finder [PDF]

open access: green2001 IEEE Aerospace Conference Proceedings (Cat. No.01TH8542), 2002
The Terrestrial Planet Finder (TPF) is a space-based astronomical telescope that will combine high sensitivity and spatial resolution to detect and characterize /spl sim/150 planetary systems within 15 pc of our Sun. In a five-year mission, currently expected to commence in 2012, TPF will look for the atmospheric signatures of life using the methods of
P. R. Lawson
openalex   +5 more sources

Terrestrial planet formation. [PDF]

open access: yesProc Natl Acad Sci U S A, 2011
Advances in our understanding of terrestrial planet formation have come from a multidisciplinary approach. Studies of the ages and compositions of primitive meteorites with compositions similar to the Sun have helped to constrain the nature of the building blocks of planets.
Righter K, O'Brien DP.
europepmc   +5 more sources

Formation of Terrestrial Planets [PDF]

open access: yesProceedings of the International Astronomical Union, 2018
The past decade has seen major progress in our understanding of terrestrial planet formation. Yet key questions remain. In this review we first address the growth of 100 km-scale planetesimals as a consequence of dust coagulation and concentration, with current models favoring the streaming instability.
Izidoro, André, Raymond, Sean N.
openaire   +7 more sources

Building Terrestrial Planets [PDF]

open access: yesAnnual Review of Earth and Planetary Sciences, 2012
This article reviews our current understanding of terrestrial planet formation. The focus is on computer simulations of the dynamical aspects of the accretion process. Throughout the review, we combine the results of these theoretical models with geochemical, cosmochemical, and chronological constraints to outline a comprehensive scenario of the early
Morbidelli, A.   +4 more
openaire   +4 more sources

Migration of comets to the terrestrial planets [PDF]

open access: bronzeProceedings of the International Astronomical Union, 2006
AbstractWe studied the orbital evolution of objects with initial orbits close to those of Jupiter-family comets (JFCs), Halley-type comets (HTCs), and long-period comets, and the probabilities of their collisions with the planets. In our runs the probability of a collision of one object with the Earth could be greater than the sum of probabilities for ...
С. И. Ипатов, John C. Mather
openalex   +4 more sources

The Occurrence Rate of Terrestrial Planets Orbiting Nearby Mid-to-late M Dwarfs from TESS Sectors 1–42

open access: yesThe Astronomical Journal, 2023
We present an analysis of a volume-complete sample of 363 mid-to-late M dwarfs within 15 pc of the Sun with masses between 0.1 and 0.3 M _⊙ observed by TESS within sectors 1–42. The median stellar mass of the sample is 0.17 M _⊙ .
Kristo Ment, David Charbonneau
doaj   +1 more source

Mars: a small terrestrial planet [PDF]

open access: yesThe Astronomy and Astrophysics Review, 2016
Mars is characterized by geological landforms familiar to terrestrial geologists. It has a tenuous atmosphere that evolved differently from that of Earth and Venus and a differentiated inner structure. Our knowledge of the structure and evolution of Mars has strongly improved thanks to a huge amount of data of various types (visible and infrared ...
Mangold, N.   +4 more
openaire   +5 more sources

Implications of the TTV-detection of close-in terrestrial planets around M stars for their origin and dynamical evolution

open access: yesEPJ Web of Conferences, 2011
It has been shown that an Earth-size planet or a super-Earth, in resonance with a transiting Jupiter-like body around an M star, can create detectable TTV signals (Kirste & Haghighipour, 2011).
Rastegar S., Haghighipour N.
doaj   +1 more source

Simulations for Terrestrial Planets Formation [PDF]

open access: yesProceedings of the International Astronomical Union, 2009
AbstractWe investigate the formation of terrestrial planets in the late stage of planetary formation using two-planet model. At that time, the protostar has formed for about 3 Myr and the gas disk has dissipated. In the model, the perturbations from Jupiter and Saturn are considered.
Zhang Niu, Zhang Niu, Ji Jianghui
openaire   +6 more sources

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