First test results from a high-resolution CdZnTe pixel detector with VLSI readout

First tests of the Cassegrain adaptive optics system of the Mount Wilson 100-in telescope

First VLBI Observations with Arecibo in an International S2 Ad-hoc Array

First year results from LHCf

First-Ever European Space Weather Week

First-order phase transition of a vacuum and the expansion of the Universe

Fish as osteoporosis research models

Fission-based electric propulsion for interstellar precursor missions

Fitting the Universe on a Supercomputer

Five regimes of fusion reactions in dense stellar matter

Fizzlers

Flash hyperspectral imaging of non-stellar astronomical objects

FLEX: fluorescence explorer

Flexible climate modeling systems: Lessons from Snowball Earth, Titan and Mars

Flexible hardware platform for software radio experiments

Flexible heat pipes for CCD cooling on the Advanced Camera for Surveys

Flexible polycrystalline thin-film photovoltaics for space applications

Flight CCD detectors for the Advanced Camera for Surveys

Flight characterization of the NEAR Laser Rangefinder

Flight experiment to investigate microgravity effects on solidification phenomena of selected materials