"A wonderful resource....Students will be drawn to read and investigate....The text is direct, interesting, and free of mind-numbing chemistry and physics formulas that so often deter YAs from further investigation....An exceptionally well-done summary."-- "SLJ
. "Well-written and nicely illustrated....The technical quality of the book is very good...."-- "Science Bks & Films, a starred review
. 60 pages (all in color), 8 1/4 x 7 7/8.
12 من الصفحات تتطابق مع million years ago في هذا الكتاب
النتائج 1-3 من 12
How do meteorites get here?
Where do meteorites come from?
4 من الأقسام الأخرى غير ظاهرة
طبعات أخرى - عرض جميع المقتطفات
aluminum amounts Antarctica appear asteroids atmosphere basaltic become blue body bright caused chemical chondrite chondrules cloud cometary comets composed composition contain cooled core cosmic cosmic ray crater crust crystals dark decay determine diameter dust Earth elements event evidence fall fell field fireball formation formed fragments grains gravity gray half-life heating highlands impact inches indicates interior iron meteorites iron-nickel metal known land on Earth less light liquid lunar magnesium Mars material measurable melting Meteor meteoroid micrometeorites miles million years ago minerals molten Moon natural nickel objects observed occurred olivine orbit origin parent particles percent pieces planetary planets Polished present probably produced radioactive rare regions rocks samples seen shower shows single Solar System space speed stars stone stony meteorite structure surface temperature thin thought tiny tons types volcanic weight wind