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Rare desert winter snow on saguaro cactus in the Catalina Mountains.

The Buzz: Winter Solstice Celebrations

The importance of the shortest day of the year in cultures around the world.
Researchers think Mars was an ocean planet 4 billion years ago.

Researcher theorizes ancient Mars underwent climate change disaster

An article suggests life on the Red Planet doomed itself and altered the environment.
Illustration of DART satellite closing in on asteroid moon Dimorphos.

University of Arizona asteroid hunters celebrate success of DART mission

Spacewatch has used UA telescopes to search for near-Earth asteroids since the 1980s.
Artist's illustration of an Earth-type exoplanet.

Super Earths are out there

Scientists find most exoplanets they have discovered are similar to our home world.
The Milky Way seen from Reddington Pass east of Tucson. May 2022

First-ever 'Oracle Dark Sky Cultural Festival' is this week

Residents embrace the economic boost to the town.
John de Lancie appeared for the final time (?) as "Q" in Star Trek: Picard, season 2.

True Concord Voices & Orchestra premieres "Helios", and welcomes a friend from the final frontier - actor John de Lancie.

Also on Arizona Spotlight: Patrick Robles, president of the Associated Students of the University of Arizona Student, urges the City of Tucson to keep public transit free; and The Tucson Orchid Society celebrates 50 years of shared fascination.
Illustration of DART satellite closing in on asteroid moon Dimorphos.

NASA sets up collision with far-away asteroid

The DART mission will test whether Earth-fired weapons might someday push world-threatening objects off course.

Ground-based telescopes need love, too

Research continues quietly atop S. Arizona mountains while the Webb space telescope makes headlines.
Image from James Webb Space Telescope

James Webb Telescope scientists dive into interstellar study

Astronomers are beginning to settle into a routine of regular research assignments.
A 2-second image exposure shows Starlink satellites in front of a star field.

University of Arizona graduate tracks satellite constellations for beleagured astronomers

Her study comes as Space X prepares to launch more sky-cluttering Starlink spacecraft.
The first scientific images from the James Webb Space Telescope are due July 12.

James Webb Telescope ready for science

Scientists say all the spacecraft's instruments are aligned for operation.

Event Horizon

Recently released images show a black hole sitting right at the center of our own galaxy.
Artist's depiction of hypergiant star VY Canis Majoris.

University of Arizona astronomers study hypergiant stars

The massive objects are the largest of their kind in the galaxy.
Kitt Peak observatory on June 19, 2022

Contreras Fire burns more than 18,000 acres

Fire managers say the fire is more than 40% contained.
The Contreras Fire burns in the Baboquivari Mountains. June 17, 2022

4 buildings at Kitt Peak lost in wildfire

Officials are still trying to assess damage.
James Webb Space Telescope undergoes pre-launch testing.

James Webb Space Telescope survives micrometeoroid impact

It is still on track to send its first scientific images of deep space next month.

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