The April 4, 2015 total lunar eclipse comes in the morning for North America, and in the evening for Eastern Asia, Indonesia, New Zealand and Australia. Here’s what to look for.
Three eclipses in one calendar month are rare. Three eclipses in one lunar month are more common. From 2000-2050, it happens 14 times.
Happy equinox, everyone! The 2015 vernal or spring (or fall) equinox comes on March 20 at 22:45 UTC (5:45 p.m. CDT).
There are currently 40 different Saros series in progress, each with its own assigned number. The total solar eclipse of March 20, 2015 belongs to Saros 120.
Finding star distances isn’t easy. Here’s how it’s done, and why astronomers recently modified the distance estimate to the famous star Betelgeuse.
From Earth’s North and South Poles, all the stars appear as circumpolar. No star rises or sets. At Earth’s equator, no star is circumpolar. And in between?
Groundhog Day – a celebration with its roots in astronomy – comes every year on February 2. It’s the year’s first “cross-quarter” day.
Will you see the Scorpion’s stinger stars – Shaula and Lesath – in the cold dawn sky? Look southeast anytime this month, to enjoy a Pawnee version of Groundhog Day.
Each calendar year has at least four eclipses – two solar and two lunar. Most years have four, but five, six or even seven eclipses are also possible.