Columns / Eye to the Sky

Total lunar eclipse coming up around tax day

The first total eclipse of the moon visible in North America since 2011 will occur April 14.

If you think winter's long, try it on Mars

The Earth has four seasons—spring, summer, fall, and winter. Do other planets in the solar system have seasons? Before answering that question, let’s review what causes the Earth’s seasons.

Mars to appear much bigger, brighter in spring

This spring will bring us the best view of Mars in seven years.

Sun’s forces render comet ISON to dust and rubble

The “comet of the century” died before its time.

Ancient traveler could be comet of the decade

In August I introduced you to comet ISON. In the last two months we have learned much more about the comet.

Column: Voyager 1 reaches interstellar space

About every 175 years the orbits of the outer planets — Jupiter, Saturn, Uranus and Neptune — are arranged so that a spacecraft on a particular flight path can swing from one planet to the next without the need for large onboard propulsion systems.

Tease photo

‘Comet of the century (maybe)’ coming soon

During the formation of our solar system — in the outer regions where it is cold enough to permit ices of water, methane, ammonia and carbon dioxide to exist — the comets were born.

Tease photo

Perseid meteor showers to rain down in August

Every year in mid-August the Earth intersects the orbit of the Swift-Tuttle comet. Lewis Swift and Horace Tuttle independently discovered this comet in 1862.

Tease photo

Today's telescopes superior to earlier models

There are many objects in the sky you can see with your unaided eyes, but these are only a small fraction of the objects you can see if you use a telescope.

Saturn remains a stargazer’s delight for June nights

Saturn during April and May was the closest, biggest and brightest it will be during 2013. And it will still be a great view in June.