Astrophysics

The supermassive black hole Sagittarius A* at the center of the Milky Way.

Stephen Hawking Thinks Black Holes Don’t Exist

And he's been trying to tell the rest of us for a decade

Can Space End, Where Did Time Zones Come From and More Questions from our Readers

You asked, we answered

I heard you like stars.

Astronomers Find What May Be a Star Within a Star

The best candidate yet for an elusive Thorne-Żytkow Object

Lisa Randall is the first female theoretical physicist tenured at Harvard.

Lisa Randall’s Guide to the Galaxy

The famed cosmologist unveils her latest theories on the invisible universe, extra dimensions and human consciousness

Justin Kasper — Solar Astrophysicist at Harvard-Smithsonian Center for Astrophysics

Solar Astrophysicist at Harvard-Smithsonian Center for Astrophysics

John Mather: Nobel Laureate & Senior Project Scientist for the James Webb Space Telescope

Smithsonian "Future Is Here" Featured Speaker

“Something pretty mysterious had to give rise to the origin of the universe.” –Richard Dawkins

The Building Blocks of Life May Have Come From Outer Space

The Building Blocks of Life May Have Come From Outer Space

Instruments developed at the Harvard- Smithsonian Center for Astrophysics, such as this Solar Probe, will go to the Sun in 2018.

New Angles

When a coronal mass ejection reaches Earth, solar particles stream along magnetic field lines, energize gases in the atmosphere and shine as norther lights.

Something New Under the Sun

Scientists are probing deep beneath the surface of our nearest star to calculate its profound effect on Earth

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Signs of Life

Astrophysicist Lisa Kaltenegger analyzes light from distant stars for evidence we're not alone

Prague's astronomical clock has marked time since the 15th century. Legend holds that local officials ordered the maker of this famous timepiece blinded to prevent him from duplicating his great achievement elsewhere.

Time for a Change

One professor's mission to revise the calendar

The View From the Center of the Universe: Discovering Our Extraordinary Place in the Cosmos

Finding a Home in the Cosmos

In a new book written with his wife, Nancy Abrams, cosmologist Joel Primack argues that the universe was meant for us. Sort of

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Lighthouse of the Skies

The Smithsonian Astrophysical Observatory probes the universe for the unimaginable

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