Posts by 

Deborah Byrd

Surprises in Venus’ south pole vortex

Behold the erratic motion of the south pole vortex of Venus. And a word about vortices in the atmosphere of other planets in our solar system, including Earth.

March 23 moon waxing toward full

Last night's moon - March 23, 2013 - waxing toward full. In the coming days, you'll find a large waxing moon in daylight in late afternoon, or shining brightly at night.

Help name new planet orbiting Alpha Centauri B. Just $4.99.

Uwingu has announced "a contest for the people of Earth" to name the planet recently discovered to be orbiting Alpha Centauri B.

Meet Zoe, a virtual talking head that can express emotion

An expressive avatar like this one might someday serve as a digital personal assistant or replace texting with face messaging.

Equinox sunrise

East ... the direction of sunrise, new beginnings, springtime! Happy equinox to all.

Auroras seen at high and mid-latitudes this weekend

As expected, the March 15 coronal mass ejection or CME from the sun caused auroras, or northern lights, at high and mid latitudes.

Moon and Jupiter on March 17, 2013

A beautiful image of last night's moon and planet Jupiter from EarthSky Facebook friend VegaStar Carpentier in Paris.

See Jupiter near moon in daytime sky on March 17 or 18

March 2013 offers the best chance for the next 12 years to see Jupiter near the moon in a blue daytime sky.

See a mountain on Mars, as if under Earth-like lighting

NASA's Curiosity rover has acquired images of Mount Sharp on Mars since it set down nearby in August. The latest shows what Mount Sharp would look like on Earth.

Geomagnetic storm and aurora alert this weekend

The March 15 CME will reach Earth in one to two days. High latitude and even middle latitude auroras possible this weekend.