The Kepler telescope has run out of fuel and officially entered retirement. Luckily, there is a replacement on the way to continue our observation of the stars.
It's tricky to get a good estimate for how many satellites are in the skies above us, but if you've ever looked up at the night sky you've probably seen one orbiting the Earth.
Under Trump's request, NASA's budget would hold steady, while the National Institutes of Health and the National Science Foundation would see their funding slashed.
As NASA grapples with finding funding for research in addition to exploration, the agency faces its biggest hurdle yet: a president who denies climate change.