Posts by 

Shireen Gonzaga

Delta Cephei helps measure cosmic distances

Delta Cephei is an inconspicuous variable star in the northern constellation Cepheus the King. This star helps establish the cosmic distance scale.

Alpha Cephei, a fast-spinning star

Alpha Cephei, in the constellation Cepheus the King, is a bit of an enigma. It’s spinning so fast that it appears like a slightly flattened beach ball.

Why 61 Cygni is nicknamed Flying Star

Compared to other stars, 61 Cygni moves quite rapidly against the background of more distant stars, revealing its proximity to Earth.

See Mira the Wonderful at its brightest

Catch elusive wonderful Mira, a famous variable star in the constellation Cetus, at its maximum brightness in August 2021. Now you see it ... now you don't!

Exquisite Albireo, a much-loved double star

Albireo, in the constellation Cygnus the Swan, is a favorite among stargazers. Through a small telescope, it appears as a stunning gold star with a dimmer blue companion.

The Scorpion’s Crown and its stellar neighborhood

Bright red Antares, and the 3 stars of the Scorpion's Crown, belong to a young group of stars called the Scorpius-Centaurus Association.

Ruby red Antares is the Scorpion’s Heart

Red Antares, Heart of the Scorpion in the constellation Scorpius, is a mighty star, a red supergiant.
Human World

Poison mushrooms: How to tell

A popular adage among mushroom foragers is, “you can eat any mushroom ... once.” Some wild mushrooms are poisonous and will make you sick. A few can kill.

What is Earth’s Ring of Fire?

The Ring of Fire is a region of very active seismic activity - with most of Earth's volcanoes and earthquakes - caused by interacting tectonic plates.

What is the age of Earth?

Our planet does not give up its age easily. Scientists studied the oldest rocks from our planet and solar system to figure out Earth's age.