SPIRALE: early warning optical space demonstrator

Spirit's Home Run: More Mineralogical Diversity as Observed by Mini-TES on the Traverse to and Arrival at Home Plate in the Columbia Hills of Gusev Crater, Mars

Spirit's Traverse to the Columbia Hills: Systematic Variations in Clast Morphometry and Texture of Pebble to Cobble Sized Clasts, With Implications for Geological Processes and History

Spitzer and DIRBE Studies of the Infrared Background

Spitzer Early Science Results

Spitzer Imagery & Spectroscopy of Symbiotics with Extended Nebulosity.

Spitzer MIPS Imagery of Symbiotic Stars with Extended Nebular Ejecta

Spitzer Observations of a Newly-Discovered Nearly Edge-On Disk About HD 32297

Spitzer Observations of Eclipsing Binaries with Cepheid Components: a Key to the Extragalactic Distance Scale

Spitzer Observations of Mutual Events in the Binary System (617) Patroclus-Menoetius

Spitzer Space Telescope IRAC and MIPS Observations of the Interacting Galaxies IC2163 and NGC2207: Clumpy Emission

Spitzer Spectra of the Wind from M82

Spitzer Survey of Magellanic Clouds Supernova Remnants: Dust Content in Core-Collapse Supernovae

Spitzer View of Four Low Surface Brightness Giant Galaxies: Malin 1, UGC 6614, UGC 6879, UGC 9024

Spitzer-Chandra ToO Observations of a Short Duration GRB

Spitzer-Chandra ToO Observations of a Short/Hard GRB

Splashing on Mars

Splitting definably compact groups in o-minimal structures

Splitting families and complete separability

Splitting families and the Noetherian type of $βω-ω$