Where sounds were heard:

SammyR from Bryan, Texas writes to TexasUFOs:

My friend looked up and saw this dark shadowy object hovering over us. She said in a scared voice look up! I looked up and saw what seemed to be some sort of of black metallic craft moving at a slow pace, sort of just gliding along the sky. It was explainable and I'm still startled at what I saw. There was no sound and it moved eerily through the sky. It sort of had a cloak or disguise to it.

NUFORC Report from September 7th in Richmond, Texas:

Black triangle over Texas.

My wife and I had our neighbors over for dinner. It was about 9:30 or 10:00. When my neighbor saw this thing just appear.

It was a black triangle the moon was coming up so you could see the outline on the sky. It had a grid of lights across the bottom larger ones on the edges. They were flashing and changing all colors. It moved north to south over the top of the houses in my back yard. Much bigger than an airplane.

It moved steadily and silently across the sky at a good rate of speed. We watched it just slowly fad out and disappear at a steady speed.

Their was three of us that witnessed it and it lasted about 15 seconds.

NUFORC case S136069

Was at a football game and saw what appeared to be a large light green tinted meteor that had come from over my right side and went north. Ended in an explosion. Never saw one before. Surprised by color. - Jackie H

We also saw 2 fireballs of relatively the same magnitude and duration (different speeds) in the same night of 9/6/13 from the same location (pool) in College Station - Tommy H

A bright streak, going up and to the right, that quickly faded, no smoke, just a very bright streak.. I would like to know if anyone else saw, recorded or reported this phenomenon, it seemed odd that it appeared to be going up, but I'm guessing it was an optical illusion due to its trajectory as it entered the atmosphere. -  Adam H. in College Station

Looked like a burning blue flame in the sky and left a short trail. Awesome. -Jacob D. in Garland

I have seen falling stars in the past, but this was the brightest and longest I have ever seen. - Janet O in San Antonio

Astronomers plan to study asteroid set to pass Earth to avert future catastrophes.
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About 1.7 miles in diameter — or, nine times longer than a cruise ship — Asteroid 1998 QE2 will make its closest approach to Earth at 4:59 p.m. Friday

"This is one of the big ones," said Paul Chodas, a scientist with NASA's Near-Earth Orbit Program Office at the Jet Propulsion Laboratory in California. "It's certainly one to keep an eye on."
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Asteroid 1998 QE2 was one of the first to be identified and tracked, and now it is on a course that will pass within 3.6 million miles of Earth on Friday.

Have no fear. That's 15 times the distance between the Earth and the moon.
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Bolden noted that NASA's proposed 2014 budget includes start-up funds for a mission to identify, track, and send a robot spacecraft to capture a small asteroid and tow it to a stable lunar orbit.
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"Asteroids are a very high priority at NASA for a number of different reasons," said NASA's Gay Yee Hill. "To protect the planet…to understand how the solar system formed…and to explore."