Zobrazeno 1 - 10
of 81
pro vyhledávání: '"Grinspoon, David H."'
Autor:
Petkowski, Janusz J., Seager, Sara, Grinspoon, David H., Bains, William, Ranjan, Sukrit, Rimmer, Paul B., Buchanan, Weston P., Agrawal, Rachana, Mogul, Rakesh, Carr, Christopher E.
Long-standing unexplained Venus atmosphere observations and chemical anomalies point to unknown chemistry but also leave room for the possibility of life. The unexplained observations include several gases out of thermodynamic equilibrium (e.g. tens
Externí odkaz:
http://arxiv.org/abs/2401.04708
Autor:
Seager, Sara, Petkowski, Janusz J., Carr, Christopher E., Saikia, Sarag J., Agrawal, Rachana, Buchanan, Weston P., Grinspoon, David H., Weber, Monika U., Klupar, Pete, Worden, Simon P., Iakubivskyi, Iaroslav, Pajusalu, Mihkel, Kaasik, Laila
Publikováno v:
Aerospace 2022, 9(11), 733
For over half a century, scientists have contemplated the potential existence of life within the clouds of Venus. Unknown chemistry leaves open the possibility that certain regions of the Venusian atmosphere are habitable. In situ atmospheric measure
Externí odkaz:
http://arxiv.org/abs/2211.11443
Autor:
Baumgardner, Darrel, Fisher, Ted, Newton, Roy, Roden, Chris, Zmarzly, Pat, Seager, Sara, Petkowski, Janusz J., Carr, Christopher E., Špaček, Jan, Benner, Steven A., Tolbert, Margaret A., Jansen, Kevin, Grinspoon, David H., Mandy, Christophe
Publikováno v:
Aerospace 2022, 9, 492
The composition, sizes and shapes of particles in the clouds of Venus have previously been studied with a variety of in situ and remote sensor measurements. A number of major questions remain unresolved, however, motivating the development of an expl
Externí odkaz:
http://arxiv.org/abs/2209.02054
Autor:
French, Richard, Mandy, Christophe, Hunter, Richard, Mosleh, Ehson, Sinclair, Doug, Beck, Peter, Seager, Sara, Petkowski, Janusz J., Carr, Christopher E., Grinspoon, David H., Baumgardner, Darrel
Publikováno v:
Aerospace 2022, 9, 445
Regular, low-cost Decadal-class science missions to planetary destinations will be enabled by high-{\Delta}V small spacecraft, such as the high-energy Photon, and small launch vehicles, such as Electron, to support expanding opportunities for scienti
Externí odkaz:
http://arxiv.org/abs/2208.07724
Autor:
Agrawal, Rachana, Buchanan, Weston P., Arora, Archit, Girija, Athul P., de Jong, Maxim, Seager, Sara, Petkowski, Janusz J., Saikia, Sarag J., Carr, Christopher E., Grinspoon, David H., Longuski, James M.
Publikováno v:
Aerospace 9.7 (2022): 359
Venus is known for its extreme surface temperature and its sulfuric acid clouds. But the cloud layers on Venus have similar temperature and pressure conditions to those on the surface of Earth and are conjectured to be a possible habitat for microsco
Externí odkaz:
http://arxiv.org/abs/2208.05582
Autor:
Seager, Sara, Petkowski, Janusz J., Carr, Christopher E., Grinspoon, David H., Ehlmann, Bethany L., Saikia, Sarag J., Agrawal, Rachana, Buchanan, Weston P., Weber, Monika U., French, Richard, Klupar, Pete, Worden, Simon P., Baumgardner, Darrel
Publikováno v:
Aerospace 9.7 (2022): 385
Finding evidence of extraterrestrial life would be one of the most profound scientific discoveries ever made, advancing humanity into a new epoch of cosmic awareness. The Venus Life Finder (VLF) missions feature a series of three direct atmospheric p
Externí odkaz:
http://arxiv.org/abs/2208.05570
Autor:
Agrawal, Rachana, Seager, Sara, Petkowski, Janusz J., Carr, Christopher E., Buchanan, Weston P., Bywaters, Kathryn, de Jong, Maxim, Grinspoon, David H., Iakubivskyi, Iaroslav, King, Isabel R., Saikia, Sarag J., Zacny, Kris
Publikováno v:
In Advances in Space Research March 2024
Autor:
Way, Michael J., Del Genio, Anthony D., Kiang, Nancy Y., Sohl, Linda E., Grinspoon, David H., Aleinov, Igor, Kelley, Maxwell, Clune, Thomas
Present-day Venus is an inhospitable place with surface temperatures approaching 750K and an atmosphere over 90 times as thick as present day Earth's. Billions of years ago the picture may have been very different. We have created a suite of 3D clima
Externí odkaz:
http://arxiv.org/abs/1608.00706
Autor:
Tarter, Jill C., Backus, Peter R., Mancinelli, Rocco L., Aurnou, Jonathan M., Backman, Dana E., Basri, Gibor S., Boss, Alan P., Clarke, Andrew, Deming, Drake, Doyle, Laurance R., Feigelson, Eric D., Freund, Friedmann, Grinspoon, David H., Haberle, Robert M., Hauck II, Steven A., Heath, Martin J., Henry, Todd J., Hollingsworth, Jeffery L., Joshi, Manoj M., Kilston, Steven, Liu, Michael C., Meikle, Eric, Reid, I. Neill, Rothschild, Lynn J., Scalo, John M., Segura, Antigona, Tang, Carol M., Tiedje, James M., Turnbull, Margaret C., Walkowicz, Lucianne M., Weber, Arthur L., Young, Richard E.
Stable, hydrogen-burning, M dwarf stars comprise about 75% of all stars in the Galaxy. They are extremely long-lived and because they are much smaller in mass than the Sun (between 0.5 and 0.08 MSun), their temperature and stellar luminosity are low
Externí odkaz:
http://arxiv.org/abs/astro-ph/0609799
Publikováno v:
Science, 1999 Oct 01. 286(5437), 87-90.
Externí odkaz:
https://www.jstor.org/stable/2898894