GRAVITY NASA SPACE EARTH SOLAR SYSTEM UNIVERSE SCIENCE TECH EDUCATORS TWEET IF YOU DROP EVERYBODY KNOWS REALLY THE UNIVERSE THE WAY IT PIECES MATTER THE PLANETS ORBIT EARTH ORBITS THE STARS ALBERT LIVED THE 20TH CENTURY NEW IDEA THOUGHT ITSELF CURVED WARPED STAR PLANET CAUSE KIND OBJECT FALL ANIMATION IDEA NUMBER EXPERIMENTS SHOW EINSTEIN RIGHT QUESTIONS NO ANSWERS FORCE CAUSES ATOMS EMPTY SPACE HOLD POSSIBLE AT WORK NATURE LAWS OF NATURE DESIGNS ALL THINGS THE PICTURES BIG QUESTIONS SCIENTISTS ORDINARY PEOPLE WONDERED HOW TO FINDING TRYING WORK THINGS SPECIAL ANSWERS MYSTERIES FUNDAMENTAL PHYSICS HOPES TO DO DISCOVER EXPLORE PHYSICAL LAWS GOVERNING UNDERSTAND RULES USES BUILD THE COMPLEX BEAUTIFUL STRUCTURES ENGINEERS DEVELOPED TECHNOLOGIES INSTRUMENTS HELP WE CAN VERY SMALL THE SPACE SHUTTLE THE INTERNATIONAL SPACE STATION ORBITING EARTH OUR UNIVERSE OURSELVES DEVELOP BENEFIT PEOPLE EVERYDAY INFORMATION LAST YEARS AGO LEARN AMAZING STUFF LIKED BARYCENTER THE SOUNDS BLACK ABOUT US PRIVACY POLICY MISSION INDEX KRISTEN ERICKSON WEBMASTER NANCY LEON CONTACT MARCH 9TH LESS SUBJECT TECHNOLOGY PARENTS TYPE PLAY