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Space
Super-Earth and mini-Neptune in synchronized dance
Astronomers say they've discovered a super-Earth and mini-Neptune exoplanet system where the orbits of the 2 worlds are synchronized in a cosmic dance.
June 2, 2023
Astronomy Essentials
Visible planets and night sky for June 2023
June's visible planets: Venus and Mars are in the evening sky. Jupiter, Saturn and Mercury are in the morning sky. There will be a gathering of the moon, 2 planets and bright stars on the June solstice.
Sun
Sun activity: M flare in northwest, fiery action in southwest
Sun activity for June 2, 2023, is moderate. Fiery action continues in the southwest while we await a minor geomagnetic storm.
June 2, 2023
Astronomy Essentials
Venus after sunset: Greatest elongation on June 4, 2023
Venus after sunset will next reach greatest elongation on June 4, 2023. Look for a blazingly bright object in the sunset direction in evening twilight.
June 2, 2023
Earth
2023 hurricane forecast: Busy Pacific, quieter Atlantic
The 2023 hurricane forecast is out! Due to El Niño, forecasters are calling for a busy Pacific basin and a quieter season in the Atlantic.
June 1, 2023
Tonight
Mars and the Beehive! See them together on June 1 and 2
Spot Mars and the Beehive cluster together on June 1 and 2, 2023. Use binoculars to see the starry cluster making a sparkling background for the red planet.
June 1, 2023
Spaceflight
SpaceX wraps up Starlink launches for May
SpaceX's fifth and final Starlink launch for the month took flight from California at 6:02 UTC on May 31, 2023. Watch a recorded livestream and learn more here.
May 31, 2023
Space
Searching for habitable exoplanets in the soot zone
Astronomers say that habitable exoplanets could form in the soot zone around young stars. They could be rich in volatile carbon compounds, different from Earth.
May 31, 2023
Space
What makes a halo around the sun or moon?
A large ring or circle of light around the sun or moon is called a 22-degree halo. They are caused by high, thin cirrus clouds drifting high above your head.
May 31, 2023
Astronomy Essentials
What is stellar magnitude?
The brightest stars to the eye are 1st magnitude, and dimmest stars to the eye are 6th magnitude. How does stellar magnitude work in astronomy?
May 31, 2023
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