Sentences with phrase «stony asteroid»
The fact that it closely follows Earth's orbit suggests it may just be a booster rocket from an Apollo - era space flight that reflects as much light as a large, stony asteroid, Chodas says.
http://www.sciencemag.org/
The winning scenario: a 400 - foot - wide stony asteroid that slammed into the air at 12 miles a second and exploded.
«If we know from reconnaissance that it's a stony asteroid or a nickel - iron asteroid,» explains Remo, «we can have a pretty good idea in advance how it will respond to an X-ray blast.»
Not exact matches
Planetary scientists hope the stony siblings — the youngest yet identified — will reveal new details about how collisions shape the lives of asteroids.