Don't let any day go by without being amazed by something! I like to tweet inspirational stories, sometimes quotes, jokes or stuff I find captivating. 😘
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A beautiful phenomenon with a funny name, hoarfrost forms during clear, calm nights turning America’s public lands into picturesque winter wonderlands.
Photo at @yellowstonenps by Jacob W. Frank / NPS
Term of the day: Escape velocity
The precise velocity necessary to escape from a given point in a gravitational field. A body in a parabolic orbit has escape velocity at any point in that orbit. The velocity necessary to escape from the Earth's surface is 6.95 m/s (11.2 km/s)