Space
This active asteroid has grown a tail! What happened?
Active asteroid 1995 BJ4 has grown a cometlike tail, leaving astronomers wondering what’s happening.
Space
A runaway star speeds in an unusual direction
Stars in our Milky Way galaxy move in a more or less orderly way. A star that moves differently from the general stream of stars is known as a runaway star.
Sun

Sun news: A very different star 1 year later

Sun news November 11, 2026: One year ago today, our star blasted out a powerful X5.1 flare. See how different the sun looks today!
Space

Celebrate as Voyager 1 reaches 1 light-day from Earth! Here’s how

The Voyager 1 spacecraft -- launched from Earth in 1977 -- will become the 1st human-made object to reach 1 light-day from Earth on November 18.
Space

Atmosphere of lava planet: ‘A cloudy, reflective sunscreen’

New observations of super-Earth TOI-561 b by the Webb telescope show again that the atmosphere of lava planet TOI-561 b does exist, and is very reflective.
Tonight

See the Summer Triangle in the northern autumn sky

Look west in the evening to see the Summer Triangle in autumn. Its 3 bright stars - Vega, Deneb and Altair - are in 3 different constellations.
Earth

The enormous oarfish could inspire new ways to explore the ocean

The giant oarfish has a remarkable fin that could inspire quieter underwater robots and open new possibilities for ocean exploration and conservation.
Human World
Space

Carl Sagan born 92 years ago today

Carl Sagan was born on November 9, 1934. He contributed to science and helped millions around the globe see why astronomy matters.
Space

Backward world? Rubin finds a retrograde object past Neptune

The Rubin Observatory in Chile has discovered a retrograde object in our solar system. It circles the sun in a highly inclined orbit beyond Neptune.
Moon Phases

Do we all see the same moon phase from Earth?

No matter where you are on Earth, we all see the same moon phase. So why can the moon look tilted, or even upside down, depending on where you are?