Astronomers have never seen before.

On March the 31st, 1989, two American astronomers discovered that a week prior, on March the 22nd, a 300-meter-wide asteroid had come fairly close to the Earth.

But all of these difficulties can be dealt with by clever astronomers,

All that absorption is why you've got everyone from astronomers to people trying to improve solar panel efficiency pursuing the blackest blacks.

Or a partner whom we find ourselves discussing at almost every turn with our close friends and our therapist, speculating with concentrated energy on what drives them, who they might really be, why they do what they do, how their childhood could have affected them, what their attachment style is, what their most recent antic might truly mean, all the while peering at them as if they were a mysterious nebulae in an outer galaxy whose workings would concentrate the minds of the most erudite and sophisticated astronomers. Or a partner who leaves us wondering whether we are not fundamentally daft and broken and poring over all that we may have done wrong without meaning to. Have we offended them? Are we too demanding? Have we exhibited too little patience for their ways of thinking? Perhaps as they have told us we want too much?

While a certain fascination for the allusive Planet X continues to persist, most astronomers

For the past 50 years, astronomers have been using radio dishes

Using a combination of X-ray and ultraviolet data, astronomers have found evidence that dark energy may be getting stronger with time.

It's such a simple process and such a necessary step for any species to expand beyond their home planet that many astronomers

Ancient astronomers already had accurate calculations for the time between two solar equinoxes or solstices,