Results 31 to 40 of about 10,001 (169)

Darwin—A Mission to Detect and Search for Life on Extrasolar Planets [PDF]

Astrobiology, 2008
The discovery of extrasolar planets is one of the greatest achievements of modern astronomy. The detection of planets that vary widely in mass demonstrates that extrasolar planets of low mass exist.
C. Cockell, A. Léger, M. Fridlund, T. Herbst, L. Kaltenegger, O. Absil, C. Beichman, W. Benz, M. Blanc, A. Brack, A. Chelli, L. Colangeli, H. Cottin, F. C. D. Foresto, W. Danchi, D. Defrére, J. Herder, C. Eiroa, J. Greaves, T. Henning, K. Johnston, H. Jones, L. Labadie, H. Lammer, R. Launhardt, P. Lawson, O. Lay, J. LeDuigou, R. Liseau, F. Malbet, S. Martin, D. Mawet, D. Mourard, C. Moutou, L. Mugnier, M. Ollivier, F. Paresce, A. Quirrenbach, Y. Rabbia, J. Raven, H. Röttgering, D. Rouan, N. Santos, F. Selsis, E. Serabyn, H. Shibai, Motohide Tamura, É. Thiébaut, F. Westall, G. White   +49 more
semanticscholar   +1 more source

Identifying the Rotation Rate and the Presence of Dynamic Weather on Extrasolar Earth-like Planets from Photometric Observations [PDF]

, 2008
With the recent discoveries of hundreds of extrasolar planets, the search for planets like Earth and life in the universe is quickly gaining momentum. In the future, large space observatories could directly detect the light scattered from rocky planets ...
E. Pallé, E. Ford, S. Seager, P. Montañés-Rodríguez, M. Vázquez   +4 more
semanticscholar   +1 more source

Tidal heating of terrestrial extrasolar planets and implications for their habitability [PDF]

, 2008
The tidal heating of hypothetical rocky (or terrestrial) extrasolar planets spans a wide range of values depending on stellar masses and initial orbits.
B. Jackson, R. Barnes, R. Greenberg
semanticscholar   +1 more source

Observed Properties of Exoplanets : Masses, Orbits, and Metallicities(Origins : From Early Universe to Extrasolar Planets) [PDF]

, 2005
precision (3 m s −1 ) and long duration. The 104 planets detected in this survey have minimum masses (M sin i )a s low as 6MEarth, orbiting between 0.02 and 6 AU. The core-accretion model of planet formation is supported by four observations: 1) The mass
G. Marcy, R. P. Butler, D. Fischer, S. Vogt, J. Wright, C. Tinney, H. Jones   +6 more
semanticscholar   +1 more source

The Effect of Varying Atmospheric Pressure upon Habitability and Biosignatures of Earth-like Planets [PDF]

Astrobiology, 2018
Understanding the possible climatic conditions on rocky extrasolar planets, and thereby their potential habitability, is one of the major subjects of exoplanet research. Determining how the climate, as well as potential atmospheric biosignatures, changes
E. Keles, J. Grenfell, M. Godolt, B. Stracke, H. Rauer   +4 more
semanticscholar   +1 more source

Stellar activity masquerading as planets in the habitable zone of the M dwarf Gliese 581 [PDF]

Science, 2014
Tricky star plays sleight-of-light Two signatures in starlight thought to be written by extrasolar planets may turn out to be forgeries. Astronomers often attribute periodic shifts in a star's apparent motion toward and away from us to the tug of ...
P. Robertson, S. Mahadevan, M. Endl, Arpita Roy   +3 more
semanticscholar   +1 more source

Reliable Detections of Atmospheres on Rocky Exoplanets with Photometric JWST Phase Curves

The Astrophysical Journal Letters
The prevalence of atmospheres on rocky planets is one of the major questions in exoplanet astronomy, but there are currently no published unambiguous detections of atmospheres on any rocky exoplanets.
Mark Hammond, Claire Marie Guimond, Tim Lichtenberg, Harrison Nicholls, Chloe Fisher, Rafael Luque, Tobias G. Meier, Jake Taylor, Quentin Changeat, Lisa Dang, Hamish C. F. C. Hay, Oliver Herbort, Johanna Teske   +12 more
doaj   +1 more source

Formation of Asteroid (16) Psyche by a Giant Impact

Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract Asteroid (16) Psyche is the largest likely metal‐rich asteroid in the Solar System and the target of the NASA Psyche mission. The mission aims to determine whether the asteroid is the core of a differentiated planetesimal that lost its mantle via a giant impact.
Saverio Cambioni, Benjamin P. Weiss, Namya Baijal, Robert Melikyan, Erik Asphaug, John B. Biersteker, Richard P. Binzel, William F. Bottke, Samuel W. Courville, Linda T. Elkins‐Tanton, David J. Lawrence, José M. G. Merayo, Carol A. Raymond, Mark A. Wieczorek, Maria T. Zuber   +14 more
wiley   +1 more source

JWST/NIRCam Transmission Spectroscopy of the Nearby Sub-Earth GJ 341b

The Astronomical Journal
We present a JWST/Near Infrared Camera (NIRCam) transmission spectrum from 3.9 to 5.0 μ m of the recently validated sub-Earth GJ 341b ( R _P = 0.92 R _⊕ , T _eq = 540 K) orbiting a nearby bright M1 star ( d = 10.4 pc, K _mag = 5.6).
James Kirk, Kevin B. Stevenson, Guangwei Fu, Jacob Lustig-Yaeger, Sarah E. Moran, Sarah Peacock, Munazza K. Alam, Natasha E. Batalha, Katherine A. Bennett, Junellie Gonzalez-Quiles, Mercedes López-Morales, Joshua D. Lothringer, Ryan J. MacDonald, E. M. May, L. C. Mayorga, Zafar Rustamkulov, David K. Sing, Kristin S. Sotzen, Jeff A. Valenti, Hannah R. Wakeford   +19 more
doaj   +1 more source

The Influence of Interior Structure and Thermal State on Impact Melt Generation Upon Large Impacts Onto Terrestrial Planets

Journal of Geophysical Research: Planets, Volume 130, Issue 7, July 2025.
Abstract We investigate the melt production of planetary impacts as a function of planet size (R/REarth $R/{R}_{\text{Earth}}$ = 0.1–1.5), impactor size (L $L$ = 1–1,000 km), and core size ratio (Rcore/R ${R}_{\text{core}}/R$ = 0.2–0.8) using a combination of parameterized convection models and fully dynamical 2D impact simulations.
Lukas Manske, Thomas Ruedas, Ana‐Catalina Plesa, Philipp Baumeister, Nicola Tosi, Natalia Artemieva, Kai Wünnemann   +6 more
wiley   +1 more source