The most common substance in the universe is called dark matter.
It doesn’t shine or reflect light; in fact, humans
can’t even see it. It is an invisible substance composed of
atoms that are far different from those that make up the
universe’s normal matter, such as stars and galaxies.
First Stage Motors Will Keep Rocket Stable After Launch
The pieces of the complex development puzzle for NASA's
next-generation space travel system are coming together. This week,
NASA selected Aerojet-General Corp. of Redmond, WA to provide
developmental engines for the Ares I crew launch vehicle first
stage roll control system.