Is this 'Oumuamua’s back story?
Astronomers suggest it’s all about tides and close encounters.
Astronomers may have a handle on where the first known interstellar object to visit our solar system came from and ho...
An idea about Saturn's atmosphere
NASA suggests auroras turn up the heat.
How and why the upper layers of the atmospheres of Saturn, Jupiter, Uranus and Neptune are hot has been one of the my...
Double helium-core white dwarf detected
It’s the first gravitational wave source of its kind.
US astronomers have announced the detection of J2322+0509, a detached binary white dwarf composed of two helium-core ...
Bennu in unprecedented detail
It's the highest resolution image ever of a planetary body.
This global map of the asteroid Bennu is a mosaic of 2155 PolyCam images stitched together and corrected. They wer...
A giant stellar nursery
Isolated stars may lend insight into star formation.
This region of space with the bright pink cloud and the young stars surrounding it is known somewhat drily as LHA 120...
The Martian weather cake
Every layer tells a story of climate change.
The Martian ice cap is like a cake; every layer tells a story. In this case, the story is one of climate change on Ma...
Molten iron rains down on exoplanet
Planets beyond our Solar System are full of surprises.
Scientists have found signs of rain on a Jupiter-sized exoplanet 391 light years away. But it’s not ordinary rain...
The long and winding arms
Barred spiral galaxies present astronomical challenges.
The barred spiral galaxy NGC 3887, seen here as viewed by the Wide Field Camera 3 aboard the NASA/ESA Hubble Space Te...
A spiral with a past
Hubble spots a galaxy discovered centuries ago.
This image of the archetypal spiral galaxy, known as NGC 691, was captured by the NASA/ESA Hubble Space Telescope. N...
The evolution of a faraway star system
Scientists seize the rare chance to watch it unfold.
A young planet located 150 light-years away has given astrophysicists the rare chance to study a planetary system in ...
Exoplanet with the right conditions for life?
Astronomers add a little more to the story of K2-18b.
British astronomers say they have found that a well-known exoplanet more than twice the size of Earth is potentially ...
Biggest bang since the Big Bang
So big, in fact, that at first scientists didn’t believe it.
Scientists studying a distant galaxy cluster say they have discovered the biggest explosion seen in the Universe sinc...