blue articles

What causes blue meteors?

The fleeting streak we call a meteor, or shooting star, paints the night sky with light, and the color of that light is ...

Why do meteors burn blue?

The brilliant streaks we witness blazing across the night sky, commonly called shooting stars, are technically meteors—s...

Which is hotter, a blue giant or a white dwarf?

When examining the vastness of the cosmos, the surface temperature of a star is not always intuitively related to its ap...

What happens when a blue star dies?

The demise of a massive, brilliant blue star is one of the most spectacular and consequential events in the cosmos. Thes...

Do blue stars have a shorter lifespan?

The color of a star offers immediate clues about its fundamental nature, particularly its surface temperature and, conse...

How long does a blue star live?

The stars we observe in the night sky present a common visual, but beneath that shared backdrop lies a vast diversity of...

Are most galaxies red or blue-shifted?

The shift in the light emanating from distant cosmic objects tells a profound story about the structure and motion of th...

Is the universe experiencing red shift or blue shift?

The light from the overwhelming majority of objects in the cosmos arrives stretched, meaning the universe, on its grande...