Image: ISS transits the sun

Taking an image of the International Space Station as it passes in front of the Sun, Moon or planets is a popular pastime for astrophotographers. It requires planning, patience and a measure of luck. The camera must be set ...

Image: Moonrise from the space station

From his vantage point in low Earth orbit aboard the International Space Station, NASA astronaut Randy Bresnik pointed his camera toward the rising Moon and captured this beautiful image on August 3, 2017.

Aalto-1 satellite sends first image

Launched on the morning of 23 June from India, the Aalto-1 satellite's first month in space has gone according to plan.

Hubble's tale of two exoplanets: Nature vs. nurture

Is it a case of nature versus nurture when it comes to two "cousin" exoplanets? In a unique experiment, scientists used NASA's Hubble Space Telescope to study two "hot Jupiter" exoplanets. Because these planets are virtually ...

Image: Teide Observatory on Tenerife, Spain

ESA operates its Optical Ground Station (OGS) at the Teide Observatory on Tenerife, Spain, where a Zeiss 1 m-diameter telescope is used to survey and characterise objects near the 'geostationary ring' some 36 000 km above ...

The scientific value of aurora photos by astronauts

Some of the most wonderful pictures taken by astronauts from space are of aurora dancing over our planet. Now the photos are more than just pretty pictures thanks to an ESA project that makes them scientifically usable.

Image: Shedding star AG Carinae

This luminous star, AG Carinae, is losing mass at a phenomenal rate. Its powerful winds reach up to seven million km/hour, and exert enormous pressure on the clouds of material already expelled by the star.

Hubble's front row seat when galaxies collide

This delicate smudge in deep space is far more turbulent than it first appears. Known as IRAS 14348-1447—a name derived in part from that of its discoverer, the Infrared Astronomical Satellite (IRAS for short)—this celestial ...

Near Earth Objects

Near Earth Objects (NEOs) are small solar system bodies whose orbits sometimes bring them close to the Earth, thereby posing a potential threat. Because NEOs are constantly being replenished from the solar system, they are ...

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