Skip to 0 minutes and 35 secondsYou have always asked, why are material objects falling?
Skip to 0 minutes and 43 secondsIs the moon falling?
Skip to 0 minutes and 48 secondsHow many galaxies to our universe? Can I understand general relativity?
Skip to 0 minutes and 58 secondsWhy is the universe expanding? What is dark energy? And what is information contained in the first light emitted right after the big bang?
Skip to 1 minute and 28 secondsWhy that is a universe hot and dense after the big bang?
Skip to 1 minute and 48 secondsHow do I know that the gravitational wave is passing through the room?
Skip to 1 minute and 56 secondsTo cross or not to cross the horizon of a black hole? Is it a question? If you want to know why, if you want to know how, and much more, please join us on the MOOC Gravity on Future Learn.