The SpaceX CEO offered his expertise on the topic.

All the biggest science news stories of the week.

This is not photoshopped. That’s really a person falling in front of the Sun.

It looks straight on a world map, but it really isn’t.

The otherwise healthy man was unaware that he had developed the condition.

Before 2011 the world barely knew peacock spiders existed, now we can’t get enough.

The huge rocket took flight, and its booster came down successfully.

And we’ve just developed a new way to date them.

Where’s it been hiding?