I was at work off of TX hwy70, about a mile south from FM 283. I had a few minutes of down time, so I just look at the stars on a clear night, and I saw 3 white lights on the corners of a triangle object with a flashing/pulsating red light in the center. At 1st I thought it was an airplane, but it didn't make a sound, was flying way too low and slow for it to be. When it got closer, I was able to see the triangle shape when it blocked out the stars. All I could really think, was what the heck is that. I watched it for about 5 minutes, then I had to get back to work. I spent the rest of that night thinking about it.