Results 81 to 90 of about 88,017 (272)
A Global Map of Average Electron Densities in the Magnetosphere of Saturn
Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.Abstract Measurements from the Cassini Radio and Plasma Wave Science (RPWS) experiment obtained during the entire orbital phase of the Cassini mission around Saturn (13.2 years) are processed into a meridional map of plasma densities, comprising the innermost region of the ring ionosphere, the Enceladus plasma torus, and the outer magnetosphere, up to ...
Ulrich Taubenschuss +7 more
wiley +1 more source
The Astronomical JournalExoplanet transmission spectra provide rich information about the chemical composition, clouds, and temperature structure of exoplanet atmospheres. Most exoplanet transmission spectra only span infrared wavelengths (≳1 μ m), which can preclude crucial ...
Charlotte Fairman +2 more
doaj +1 more source
Hubble Space Telescope arrives
Eos, Transactions American Geophysical Union, 1989 After a secret transcontinental flight, NASA's Hubble Space Telescope has arrived at the Kennedy Space Center at Cape Canaveral, Fla., where it will be tested in preparation for a March 26, 1990, launch aboard the space shuttle Discovery.The telescope was gingerly transferred from a Lockheed plant in California, where it was assembled, to Florida on an
openaire +1 more source
Hubble Space Telescope (HST): Emergency support [PDF]
The Hubble Space Telescope (HST) is a national facility that consists of a 2.4-m aperture Ritchey-Chretien cassegrain telescope weighing approximately 9525 kg with various energy detectors designed for the observation of IR, visible, and UV wavelengths ...
Repass, J., Wojtalik, F.
core +1 more source
Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.Abstract Jupiter's auroral regions have previously been defined by broad‐scale auroral structures, but these are typically obscured by the wide array of temporal variability observed at timescales between minutes and days, making it difficult to understand the underlying magnetospheric biases driving these brightness differences.
Tom S. Stallard +9 more
wiley +1 more source
New Estimates of Nitrogen Fixation on Early Earth
LifeFixed nitrogen species generated by the early Earth’s atmosphere are thought to be critical to the emergence of life and the sustenance of early metabolisms.
Madeline Christensen +4 more
doaj +1 more source
Hubble Space Telescope: Optical telescope assembly handbook. Version 1.0 [PDF]
The Hubble Space Telescope is described along with how its design affects the images produced at the Science Instruments. An overview is presented of the hardware.
Burrows, Chris
core +1 more source
Atmospheric Chemistry of Venus-like Exoplanets
, 2010 We use thermodynamic calculations to model atmospheric chemistry on terrestrial exoplanets that are hot enough for chemical equilibira between the atmosphere and lithosphere, as on Venus. The results of our calculations place constraints on abundances of
Bruce Fegley +18 more
core +1 more source
The Astrophysical JournalWe present the latest results from the Chicago-Carnegie Hubble Program to measure the Hubble constant, using data from the James Webb Space Telescope (JWST). The overall program aims to calibrate three independent methods: (1) tip of the red giant branch
Wendy L. Freedman +5 more
doaj +1 more source
The Hubble Space Telescope high speed photometer [PDF]
The Hubble Space Telescope will provide the opportunity to perform precise astronomical photometry above the disturbing effects of the atmosphere. The High Speed Photometer is designed to provide the observatory with a stable, precise photometer with ...
Bless, R. C. +5 more
core +1 more source