Articles tagged as Astronomy | Smithsonian Magazine

The thread-like structures in this image from the Japanese satellite Hinode are spicules, giant plumes of gas that transfer energy through the sun’s various regions.

Millions of Plasma ‘Spicules’ Could Explain the Extreme Heat of the Sun’s Atmosphere

New observations suggest interactions between opposite magnetic fields cause millions of super hot tendrils to erupt from the surface of the sun

November 15, 2019

The space rock’s initial nickname, Ultima Thule, drew criticism for its ties to Nazi ideology

November 13, 2019

Studying the lunar material will help scientists understand the best way to analyze new samples from future missions to the moon

November 8, 2019

A composite image of Mercury's 2016 transit.

How to Watch Mercury’s Rare Transit Across the Sun

Step one: Protect your eyes

November 7, 2019

After two eclipse expeditions confirmed Einstein's theory of general relativity, the scientist became an international celebrity.

One Hundred Years Ago, Einstein’s Theory of General Relativity Baffled the Press and the Public

Few people claimed to fully understand it, but the esoteric theory still managed to spark the public’s imagination

November 4, 2019

It’s Death By A Million Cuts on This Slasher Planet!

The artwork highlights the weird world of exoplanets where it rains glass and planets circle zombie stars

October 30, 2019

The Wright brothers' 1903 flight made history, regardless of other claims about earlier flights.

Ask Smithsonian

Was Jakob Brodbeck First in Flight? And More Questions From Our Readers

You’ve got questions, we’ve got experts

November 2019

An artists interpretation of the Yeti Galaxy.

New Research

Behold This ‘Cosmic Yeti,’ a Monster Galaxy From the Beginning of Time

Astronomers recently spotted 12.5 billion-year-old light from the giant galaxy, which helps explains the evolution of the early universe

October 23, 2019

Artist's impression of gas flow in a protoplanetary disk.

New Research

To Find Baby Planets, Researchers Chase Waterfalls of Gas

Analysis of data from the ALMA telescope shows gas flows from the surface to middle of protoplanetary discs as new planets form

October 18, 2019

Illustration of a hot Jupiter planet in the Messier 67 star cluster. Hot Jupiters are so named because of their close proximity — usually just a few million miles — to their star, which drives up temperatures and can puff out the planets.

What Astronomers Can Learn From Hot Jupiters, the Scorching Giant Planets of the Galaxy

Many of the planets that are roughly the size of Jupiter orbit right next to their stars, burning at thousands of degrees

October 11, 2019

James Peebles, Michael Mayor and Didier Queloz

Half goes to cosmologist James Peebles for work on cosmic background and dark matter and half goes to the team that discovered the first exoplanet

October 9, 2019

Cool Finds

Researchers Discovered 20 Tiny New Moons Circling Saturn

The ringed planet now takes Jupiter’s title for the planet with the most moons

October 8, 2019

Cool Finds

New Organic Compounds Found in Plumes From Saturn’s Icy Moon Enceladus

Analysis of data from the late, great Cassini spacecraft reveals the moon is spurting oxygen and nitrogen-bearing organic compounds into space

October 4, 2019

Charlotte Moore Sitterly made huge strides in our understanding of how atoms are structured and what stars, especially our sun, are made of.

Women Who Shaped History

How Charlotte Moore Sitterly Wrote The Encyclopedia of Starlight

The “world’s most honored woman astrophysicist” worked tirelessly for decades to measure the makeup of the sun and the stars

September 23, 2019

Cool Finds

Recently Discovered Neutron Star Is Almost Too Massive to Exist

The star J0740+6620 is 2.14 times the mass of our sun but just 12 miles in diameter, approaching the density of a black hole

September 18, 2019

Based on the speed and trajectory of a newly detected object, astronomers believe it came to our solar system from beyond. This illustration shows the first known interstellar object to fly though our solar system, 'Oumuamua.

Astronomers Spot a Comet That Likely Came From a Different Solar System

After ‘Oumuamua, the newly detected rock is just the second known object to visit from interstellar space

September 12, 2019

The Harvest moon is the full moon each year that falls closest to the autumnal equinox.

A Rare Harvest ‘Micromoon’ Will Light Up the Sky on Friday the 13th

The United States hasn’t experienced a nation-wide full moon on this superstitious date since 2000

September 11, 2019

An artist's illustration of the planet K2-18b and another planet, K2-18c, that orbits closer to the parent star. Both planets orbit a red dwarf about 110 light-years from Earth in the constellation Leo.

Water Vapor Detected in the Atmosphere of an Exoplanet in the Habitable Zone

The planet K2-18b, about 110 light-years away, could have swirling clouds and falling rains of liquid water droplets

September 11, 2019

The green blob of X-rays in the lower left quadrant of the Fireworks galaxy lasted about 10 days before disappearing.

New Research

Astronomers Puzzle Over Short-Lived Glowing Green Light Bursts

The ultra luminous X-rays lasted about 10 days in the aptly named Fireworks galaxy

September 6, 2019

A view of the small crater Yutu recently analyzed.

Cool Finds

China Claims Lunar Rover Found a Gel-Like Substance on the Moon

Experts suspect the material may be glass created during a meteorite impact

September 3, 2019