Page Updated: Friday, February 20, 2026 4:14 AM ET

The San Diego Union-Tribune - Science

NASA boss blasts Boeing and space agency managers for Starliner's botched astronaut flight

8 hours ago

NASA conducts second rocket fueling test that will decide when Artemis astronauts head to the moon

15 hours ago

Surprise shark caught on camera for first time in Antarctica's near-freezing deep

1 day ago

Moderna says the FDA will consider its new flu shot after resolving a public dispute

1 day ago

NASA hopes fuel leaks are fixed as it launches another countdown test for the Artemis II moonshot

2 days ago

To aficionados, fungi are freaky, mystical and overlooked. They're helping scientists learn more

2 days ago

A California photographer is on a quest to photograph hundreds of native bees

6 days ago

A 'ring of fire' solar eclipse will dazzle people and penguins in Antarctica

6 days ago

UC San Diego graduate Jessica Meir en route to the International Space Station

6 days ago

New astronauts launch to the International Space Station after medical evacuation

6 days ago

Trump's EPA revokes scientific finding that underpinned US fight against climate change

7 days ago

RFK Jr. pledged more transparency. Here's what the public doesn't know anymore

7 days ago

Collar cams offer a bear's eye view into the lives of grizzlies on Alaska's desolate North Slope

16 days ago

NASA delays astronauts' lunar trip until March after hydrogen leaks mar fueling test

16 days ago

NASA hit by fuel leaks during a practice countdown of the moon rocket that will fly with astronauts

17 days ago

NASA delays the first Artemis moonshot with astronauts because of extreme cold at the launch site

20 days ago

It's one storm after another for much of the US, but the next one's path is uncertain

23 hours ago

Video shows flames flying from NASA plane that touched down without landing gear

23 days ago

Frost quakes cause loud booms, light shaking when bitterly cold temperatures persist

23 days ago

Mysterious dark matter may be better understood through a new map of far-off galaxies

24 days ago

Astronauts say space station's ultrasound machine was critical during medical crisis

29 days ago

Indonesian handprints are the oldest cave art found yet

29 days ago

Magnitude 4.9 earthquake near San Andreas Fault shakes San Diego County

30 days ago

Parts of the U.S. could see northern lights Monday

1 month ago

In a warming world, freshwater production is moving deep beneath the sea

1 month ago

NASA sends 4 astronauts back to Earth in first medical evacuation

1 month ago

Scientists call another near-record hot year a 'warning shot' of a shifting, dangerous climate

1 month ago

Santa Ana winds will push temperatures higher than expected in San Diego County

1 month ago

Experts say Trump pullout from UN climate fighting will hurt world and leave US out of green surge

1 month ago

NASA, in a rare move, cuts space station mission short after an astronaut's medical issue

1 month ago

Does AI belong in the exam room? Lawsuit alleges Sharp violated patient privacy.

1 month ago

Butterflies, snakes and flowers: In rugged Baja canyons, San Diego scientists unlock an unsung region's biodiversity

1 month ago

'All my life has been about exploring': Ornithologist Gerardo Marrón talks birds, Baja and bringing kids into science

1 month ago

The year's first meteor shower and supermoon clash in January skies

1 month ago

Is there another option to get the nuclear waste out of San Onofre?

1 month ago

3.4 earthquake near Borrego Springs lightly shakes North County

2 months ago

Hubble Space Telescope spies dusty debris from two cosmic collisions

2 months ago

Catch the Ursid meteor shower as it peaks just before Christmas

2 months ago

Saturn's moon Titan may not have a buried ocean as long suspected, new study suggests

2 months ago

Replica of engine that powered Wright Brothers' famous plane will roar to life Wednesday in San Diego

2 months ago

Interstellar comet keeps its distance as it makes its closest approach to Earth

2 months ago

Study finds humans were making fire 400,000 years ago, far earlier than once thought

2 months ago

UCSD tool can spot more than 4,000 drugs, a boon to patient care

2 months ago

How to watch one of the year's best meteor showers, the Geminids

2 months ago

In the Curator's Words: Birch Aquarium dives deep in the waters with 'Meditation Ocean'

2 months ago

New FDA-approved glasses can slow nearsightedness in kids

2 months ago

How to watch the last supermoon of the year

2 months ago

San Diego universities forge ahead with optimism and anxiety to shape new AI-literate workforce

2 months ago

Telescope in Chile captures stunning new picture of a cosmic butterfly

2 months ago

Scientists capture the crackling sounds of what they believe is lightning on Mars

2 months ago

UN General Assembly chief says curbing climate change would make world more peaceful and safer

2 months ago

NIH funding cuts have affected over 74,000 people enrolled in experiments, a new report says

3 months ago

UC San Diego, a giant in science, is struggling with freshmen who can't do basic math

3 months ago

Arachnid super-web reveals the surprising 'constant party' life of cohabiting spiders

3 months ago

Flood watch issued for San Diego County, with heaviest rain expected Saturday morning

3 months ago

San Diego researchers reflect on the passing of James Watson, who co-discovered DNA structure

3 months ago

Zuckerberg, Chan shift bulk of philanthropy to science, focusing on AI and biology to curb disease

3 months ago

Solar storms bring colorful northern lights to unexpected places

3 months ago

Scientists spot the brightest flare yet from a supermassive black hole

3 months ago

How to spot November's supermoon, the closest of the year

3 days ago

Can a weight loss and diabetes drug treat long COVID?

3 months ago

How tiny drones inspired by bats could save lives in dark and stormy conditions

3 months ago

Scary movies and haunted houses: Researchers study how the brain responds to fear

3 months ago

Can San Diego be a crucial part of a Silicon Valley for nuclear fusion?

3 months ago

Anti-science bills hit statehouses, stripping away public health protections built over a century

3 months ago

Advice to feed babies peanuts early and often helped thousands of kids avoid allergies

3 months ago

How to watch the Orionid meteor shower, debris of Halley's comet

4 months ago

The world is heading to add 57 superhot days a year, but study indicates it could have been worse

4 months ago

2 green comets shine bright. How to spot them in the night sky

4 months ago

Scientists hope underwater fiber-optic cables can help save endangered orcas

4 months ago

From barks to words: Researchers aim to translate dog sounds with AI

4 months ago

She saw a car-sized object above a Texas farm and found a wayward hunk of NASA equipment

4 months ago

Nobel Prize in chemistry goes to discovery that could trap C02 and bring water to deserts

4 months ago

Three scientists at US universities win Nobel Prize in physics for advancing quantum technology

4 months ago

UC San Diego graduate Fred Ramsdell to share Nobel Prize in Physiology or Medicine

4 months ago

The Nobel Prize in medicine goes to 3 scientists for key immune system discoveries

4 months ago

Beautiful 'supermoon' will be visible across San Diego County on Monday

4 months ago

Caltech professor to head Palomar Observatory

4 months ago

The Nobel Prize winners will be announced next week. What to know about the prestigious awards

4 months ago

A recipe for avoiding 15 million deaths a year and climate disaster is fixing food, scientists say

4 months ago

Interstellar comet swinging past Mars as a fleet of spacecraft looks on

4 months ago

New study adds to the possibility of favorable conditions for life at Saturn's moon Enceladus

4 months ago

Researchers turn human skin cells into eggs — but not yet usable ones

4 months ago

Cal State San Marcos gets $10 million donation to help build major science and engineering center

4 months ago

A trio of space weather satellites blast off together to study the sun's violent side

4 months ago

Growing up, she found Miramar's flight line 'so inspiring.' Now this Marine pilot is a NASA pick for astronaut training.

4 months ago

Scientists discover a new dinosaur from Argentina with a crocodile bone in its mouth

4 months ago

Day and night get equal billing Monday as fall equinox arrives. Here's what to know

5 months ago

Australia approves world-first vaccine to save koalas from chlamydia

5 months ago

Well-preserved Amazon rainforest on Indigenous lands can protect people from diseases, study finds

5 months ago

Scripps researchers discover what lies within mysterious haloed barrels on the seafloor

5 months ago

Two San Diego scientists win Lasker Award for developing way to fight cystic fibrosis

5 months ago

New findings by NASA Mars rover provide strongest hints yet of potential signs of ancient life

5 months ago

Scientists are baffled by a powerful and long-lasting gamma ray explosion outside our galaxy

5 months ago

UCSD graduate Megan McArthur retires from NASA's astronaut corps after long career

5 months ago

Thousands of newborn stars dazzle in the latest snapshot by NASA's Webb Space Telescope

5 months ago

Want to work for National Weather Service? Be ready to explain how you agree with Trump

5 months ago

First peer-reviewed study of Tijuana River Valley sewage crisis finds link between water pollution and toxic gas in air

5 months ago

Endangered frog species is hopping around Southern California once again

4 months ago

Fleet Science Center to begin major renovation in September

5 months ago