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DARK SECRETS: Edwin hubble | Rare Historical Photos

Space science has come a long way since July 4, 1776. Here's a look back at the saga

Celebrating America's 250th birthday, Space.com looks back at what our understanding of space was like in 1776 and what major developments occurred to change our thinking.

Space

America 250: How has telescope technology evolved since the dawn of the U.S.?

Optical telescopes have come a long way in the past two-and-a-half centuries — from the homemade telescope of William Herschel to the orbiting Hubble Space Telescope.

Space

James Webb Space Telescope's strange little red dots may really be 'black hole stars', X-ray data suggests

Finding X-rays coming from one of the little red dots discovered by the James Webb Space Telescope could be the key to answering what these weird objects truly are.

Space

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Hubble images taken 25 years apart show big changes in the iconic Crab Nebula —‬ Space photo of the week

Astronomers reveal new insight into an iconic supernova remnant's evolution, structure and pulsar-driven growth over 25 years.

LiveScience

How fast is the universe expanding? Astronomers may be one step closer to resolving 'Hubble trouble'

The local universe may be expanding more slowly than previously thought, a discovery that could relieve a pesky discrepancy known as the Hubble tension.

Space

The Hubble tension: How magnetic fields could help solve one of the universe’s biggest mysteries

It’s well established that the universe is expanding, but there’s serious disagreement among scientists over how fast it’s happening.

The Conversation

Every major galaxy is speeding away from the Milky Way, except one — and we finally know why

A vast, flat sheet of dark matter may solve the long-standing mystery of why our neighboring galaxy Andromeda is speeding toward us while our other neighbors are moving away from us.

LiveScience

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The universe may be lopsided, new research says

The shape of the universe is not something we often think about.

Space

Our favorite Space.com stories of 2025

We asked our staff to choose their favorite Space.com stories of 2025. Here's what we got.

Space

The universe may be lopsided – new research

The shape of the universe is not something we often think about. But my colleagues and I have published a new study suggests it could be asymmetric or lopsided, meaning not the same in every direction.

The Conversation

Science history: Edwin Hubble uncovers the vastness of the universe with discovery of 'standard candle' — Oct. 5, 1923

On the night of Oct. 5, 1923, Edwin Hubble observed a strange star that flickered in intensity at regular intervals. The star, dubbed M31-V1, was key to showing that the universe extended far beyond the borders of the Milky Way.

LiveScience

Fixing the Hubble Space Telescope: A timeline of NASA's shuttle servicing missions

Spacewalking astronauts repaired and upgraded the famed Hubble Telescope during five missions from 1993 to 2009. Here's a summary of these epic servicing efforts.

Space

Universe may revolve once every 500 billion years — and that could solve a problem that threatened to break cosmology

A slowly spinning universe could resolve a puzzle in physics known as the Hubble tension, a new model suggests.

LiveScience

One Milky Way galaxy or many galaxies?

100 years ago, a young Edwin Hubble settled astronomy’s "Great Debate"

Salon

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The Conversation

One large Milky Way galaxy or many galaxies? 100 years ago, a young Edwin Hubble settled astronomy’s ‘Great Debate’

A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the American Astronomical Society in January 1925, a paper read by one of his colleagues on his behalf reported that the Andromeda nebula, also called M31, was nearly a million light…

LiveScience

'Herculean' 2.5-billion-pixel mosaic shows our closest galactic neighbor like never before — and took more than a decade to create

The new composite image, which combines hundreds of photos from the Hubble Space Telescope, shows the Andromeda Galaxy with more than 200 million individually resolved stars.

PC Gamer

It took a decade for NASA to piece together this 416,592,960 pixel image of the Andromeda galaxy and the key takeaway? 'Andromeda's a train wreck'

"It looks like it has been through some kind of event that caused it to form a lot of stars and then just shut down”

Digital Camera World

NASA's Hubble Space Telescope creates largest photomosaic ever made of "train wreck" Andromeda galaxy with over 2.5 billion pixels

It took 10 years, 1,000 Hubble orbits, and required over 600 overlapping images

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Space

100 years ago, Edwin Hubble proved our Milky Way galaxy isn't alone

A century ago, humans didn't know other galaxies existed. Here's how Edwin Hubble changed that view.

Digital Camera World

NASA’s Hubble Space Telescope celebrates 10 years of keeping its lens trained on the giants of the solar system

The NASA OPAL project was designed to monitor the atmospheric changes on Saturn, Jupiter, Neptune and Uranus

Digital Camera World

NASA Hubble Space Telescope spots cosmic eye staring straight back at it from deep space

The Hubble Telescope has spotted an unusual spiral galaxy – 76 million light-years away – that resembles an eye

Tom’s Guide

How to watch 'Cunk on Life' online from anywhere now – streaming info, free options

The interrogator we never knew we needed has returned to find out what exactly is going on. Here's how to watch "Cunk on Life" online, on TV and from anywhere in the world.

Digital Camera World

The Dark Energy Camera captures new image of one of the most prominent spiral galaxies in incredible detail

Messier 83 was discovered in 1752, but it wasn't realized that it's actually a galaxy outside the Milky Way until Edwin Hubble

Salon

Bringing the universe into focus

In “Pillars of Creation,” Richard Panek shows how the James Webb Space Telescope is altering our view of the cosmos

Salon

James Webb challenges cosmic theories

New research using clearer images from JWST are further complicating the so-called Hubble tension

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