Results 91 to 100 of about 33,171 (317)

New indication for a dichotomy in the interior structure of Uranus and Neptune from the application of modified shape and rotation data

, 2012
Since the Voyager fly-bys of Uranus and Neptune, improved gravity field data have been derived from long-term observations of the planets' satellite motions, and modified shape and solid-body rotation periods were suggested. A faster rotation period (-40
Anderson, Borucki, Brozovic, Chau, de Bergh, de Bergh, Dessler, Fegley, Fortney, Fortney, Fortney, Gautier, Graboske, Guillot, Guillot, Helled, Helled, Helled, Hori, Hubbard, Hubbard, Hubbard, Hubbard, J.J. Fortney, Jacobson, Jacobson, Kane, Karkoschka, Leconte, Lindal, Lindal, Lodders, Lorenzen, Lorenzen, Marley, N. Nettelmann, Nettelmann, Nettelmann, Podolak, Podolak, Podolak, R. Helled, R. Redmer, Redmer, Saumon, Stanley, Wilson, Wilson   +47 more
core   +1 more source

The Centenary of the Discovery of Uranus [PDF]

Scientific American, 1881
n ...
openaire   +2 more sources

The rotation of Uranus

The Astrophysical Journal, 1977
The rotation rate of Uranus is investigated by measuring the tilts of reflected Fraunhofer lines observed through a slit spectrograph. The data obtained are corrected for the effect of astronomical seeing, and the data-reduction procedures are outlined in detail.
R. M. Goody, R. A. Brown
openaire   +2 more sources

Thermal evolution of Uranus and Neptune [PDF]

Astronomy & Astrophysics, 2019
The brightness of Neptune is often found to be in accordance with an adiabatic interior, while the low luminosity of Uranus challenges this assumption.
L. Scheibe, N. Nettelmann, R. Redmer
semanticscholar   +1 more source

Plonowanie cykorii sałatowej (Cichorium intybus L. var. foliosum Bisch.) uprawianej w kilku terminach

Annales Horticulturae, 2020
Podczas badań przeprowadzonych w latach 2004–2005 oceniono wpływ terminu sadzenia rozsady na plonowanie 3 odmian cykorii sałatowej. Rozsadę sadzono 20 kwietnia, 5 i 20 maja, 5 czerwca, 15 lipca i 3 sierpnia w rozstawie 30 × 30 cm (‘Indigo’, ‘Leonardo’) i
Ewa Rożek
doaj  

RESEARCHES OF LONG-TERM VARIATIONS IN URANUS AND NEPTUNE SPECTRA

Odessa Astronomical Publications, 2016
The results of long-term spectral observations of Solar System giant planets Uranus and Neptune are presented here. Data were obtaining in period 2002-2012 at the peak Terskol Observatory (Northern Caucasus, Russia) using 2-meter Ritchey-Chretien ...
Yu. Kuznyetsova, A. Vidmachenko, O. Matsiaka, Y. Shliakhetskaya, M. Yushkin, V. Krushevska   +5 more
doaj   +1 more source

Interior Models of Uranus and Neptune

, 2010
'Empirical' models (pressure vs. density) of Uranus and Neptune interiors constrained by the gravitational coefficients J_2, J_4, the planetary radii and masses, and Voyager solid-body rotation periods are presented.
Gerald Schubert, Guillot, Jacobson, Jacobson, John D. Anderson, Kaula, Lodders, Morris Podolak, Podolak, Podolak, Ravit Helled, Saumon, Smith, Zharkov   +13 more
core   +1 more source

A Small Pathbreaking Spacecraft: Giants of Space Research (Bernard Blake, Dieter Hovestadt, and Edward Stone)

Perspectives of Earth and Space Scientists, Volume 6, Issue 1, December 2025.
Abstract The Solar, Anomalous, and Magnetospheric Explorer (SAMPEX) mission launched in July 1992 was the first NASA “Small Explorer” project. It had the goal to show how space missions could be developed much more rapidly than had become the situation in the 1980s and 1990s.
D. N. Baker, G. M. Mason
wiley   +1 more source

Observations of Uranus at High Phase Angle as Seen by New Horizons

The Planetary Science Journal
We present flux measurements of Uranus observed at phase angles of 43.°9, 44.°0, and 52.°4 by the Multispectral Visible Imaging Camera on the New Horizons spacecraft during 2023, 2010, and 2019, respectively.
Samantha N. Hasler, L. C. Mayorga, William M. Grundy, Amy A. Simon, Susan D. Benecchi, Carly J. A. Howett, Silvia Protopapa, Heidi B. Hammel, Daniel D. Wenkert, S. Alan Stern, Kelsi N. Singer, Simon B. Porter, Pontus C. Brandt, Joel W. Parker, Anne J. Verbiscer, John R. Spencer, The New Horizons Planetary Science Theme Team   +16 more
doaj   +1 more source

Examining Uranus’ ζ Ring in Voyager 2 Wide-angle Camera Observations: Quantifying the Ring’s Structure in 1986 and Its Modifications Prior to the Year 2007

The Planetary Science Journal, 2023
The ζ ring is the innermost component of the Uranian ring system. It is of scientific interest because its morphology changed significantly between the Voyager 2 encounter in 1986 and subsequent Earth-based observations around 2007.
M. M. Hedman, I. Regan, T. Becker, S. M. Brooks, I. de Pater, M. Showalter   +5 more
doaj   +1 more source