How number systems shape our thinking, and what this means for learning, language and culture

Most of us have little trouble working out how many milliliters are in 2.4 liters of water (it's 2,400). But the same can't be said when we're asked how many minutes are in 2.4 hours (it's 144).
Astronomy on MSN

Why do brighter astronomical objects have negative magnitudes?

What is the baseline for determining the magnitude scale of celestial objects? Why do brighter objects have negative numbers? Dean TreadwayKnoxville, Tennessee The first observer to catalog ...