People always want to know we know how old everything is. @AstronomyCast will answer that. More at #365DaysOfAstro

People always want to know we know how old everything is. @AstronomyCast will answer that. More at #365DaysOfAstro
The Deep Space Network. Today we’re going to talk about how this system works and how it communicates with all the spacecraft out there in the Solar System
The movement of the planets didn’t really match any theory; not until Johannes Kepler came along with his ellipses, and everything finally worked. #365DaysOfAstro @astronomyCast
In last week’s episode we talked about the things that change here in our own solar system. Now we’ll talk about everything else in the Milky Way and beyond.
Astronomers have found that sometimes the Universe changes. Things move, things explode, things get brighter or dimmer. In fact, knowing this has helped astronomers discover some very important aspects of the Universe. Today we begin a two part series on Transients and their role in astronomy.
Fritz Zwicky discovered dark matter, gravitational lensing, supernovae and neutron stars. And he also worked on a few more controversial ideas like, uh, tired light. Let’s learn more about Zwicky.
When astronauts go to the outer space, what are the various kinds of radiation they’ll encounter? Is there anything we’ll be able to do about it? #365daysofastro
What is the planetary protection protocols so we won’t infecting other world when we send rovers and landers?