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About These Blogs: The JPL Science & Technology Blogs are a way for our researchers and technical staff to give first-hand accounts of the activities that are going on at the Jet Propulsion Laboratory. A cross-section of our staff contribute posts about the tasks they are currently involved in for NASA and JPL. These blog posts are meant to discuss technical topics. Selected comments that are on-topic are published and are moderated.

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Topic: Astrophysics & Space Sciences: Structure and Evolution of the Universe
06.09.2009 6:09 PM
Parker Fagrelius

By Parker Fagrelius
Astronomy and Physics Missions Concepts

Well, the title is a bit of a misnomer perhaps. We are actually trying to define dark matter and dark energy properties through detection of distant galaxies. Dark matter and dark energy are the creative terms used to describe ~95% of all the mass/energy in the universe (remember, E=mc2). They are called dark in part because we can’t see them - they don’t interact with electromagnetic forces and therefore we are unable to directly measure their properties. One method that ...Read More on 'Astronomy and Physics Missions Concepts'

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Author Bios

Erik Bailey
Guidance and Control Systems Engineering
Julie Castillo
Planetary Ices
Parker Fagrelius
Astronomy and Physics Missions Concepts
Chuck Manning
Microdevices Laboratory
Jeff Norris
Supervisor, Planning Software Systems Group
Tom Roberts
Optical Communications
Ruwan Somawardhana
Spacecraft Thermal Engineering

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