Earth
Sun
What is the heliosphere and how can we measure it?
The heliosphere is a bubble of solar gas that extends outward and protects the planets from interstellar radiation. Scientists would like a probe to study it.
Sun
Sun news June 14, 2024: Two regions churning with activity
Sun news for June 14, 2024. Two sunspot regions are displaying interesting activity, with the promise of more. CME from June 12 could bring geomagnetic storming
Astronomy Essentials
Tonight

Visible planets and night sky guide for June

Visible planets and night sky guide for June 2024. Mercury moves behind the sun on June 14th, reaching superior conjunction. Plus, the moon is reaching apogee.
Brightest Stars

Rastaban and Eltanin, the Dragon’s Eyes, on June evenings

Look in the northeast on these June evenings, near the star Vega. You'll see Rastaban and Eltanin, the eyes of Draco the Dragon.
Earth

Rare juvenile T. rex discovered by young fossil hunters

A family fossil hunting in the North Dakota badlands stumbled across an intriguing fossil. Later, scientists identified it as a rare juvenile T. rex.
Earth

Cicadas are emerging across parts of the U.S.

The cicadas are here! Have you seen - and heard them - in your neighborhood? Cicadas may be plentiful and loud, but they're basically harmless.
Astronomy Essentials

The ecliptic is the sun’s path in our sky

The ecliptic is the path the sun takes across our sky. It's the Earth-sun plane, and, more or less, the plane of our solar system.
Spaceflight

Leaky Boeing Starliner extending stay at ISS for evaluation

The 1st crewed Boeing Starliner - launched toward the ISS on June 5 and docked June 6, 2024 - will remain on orbit until at least June 22 for an extended evaluation.
Space

Epic solar storm effects seen by Mars rovers

The sun lobs its particles into the solar system, and studying this space weather on Mars helps us understand what future astronauts might face there.
Tonight

Earliest sunrises (or sunsets) come before June solstice

If you live in the Northern Hemisphere, your earliest sunrises of the year are happening around now. Southern Hemisphere? Your earliest sunsets are around now.