Comet 67P, with multiple dust jets spewing from it.

One comet, 70 thousand images

Scientists released the OSIRIS Image Viewer to make the amazing images of comet 67P – acquired by the Rosetta spacecraft – easily accessible on the internet.

Proxima-b exoplanet.

Closest rocky exoplanets could support life

Intense UV radiation from red dwarf stars was thought to make potentially habitable exoplanets unable to support life. But a new study of the 4 nearest rocky worlds suggests otherwise.

Moon’s south pole possible landing site

NASA hopes to send astronauts to the surface of the moon in 5 years, and has planned a landing site where no human has yet been: the lunar south pole.

TGO orbiting Mars.

The strange case of Mars’ disappearing methane

In 2013, in a big success story, a Mars rover and orbiter made a near-simultaneous observation of methane in Mars’ atmosphere. Now a newer mission orbiting Mars – ESA’s Trace Gas Orbiter – has failed to detect methane. Why?

Jumbo exoplanet discovered in double system with a dead star

The giant exoplanet – 13 times more massive than Jupiter – is the first yet found that orbits a binary star system in which 1 of the 2 stars is dead.

Video still of April 6, 2019 meteor.

Another asteroid disintegrates over Russia

A bright meteor was caught in many dashcam videos – in broad daylight – on April 6, 2019, over the Russian city of Krasnoyarsk. See a video compilation here.

Solar eruption on the sun.

When and how it rains on the sun

Rain takes different forms on the planets and moons of our solar system. But it also “rains” on the sun, as electrified gas drips from giant magnetic loops in the sun’s outer atmosphere. Read about the sun’s coronal rain.

Black hole image confirm Einstein’s relativity theory?

Einstein’s theory was confirmed in 1919, when British astronomer Sir Arthur Eddington measured the bending of starlight around the sun during a total solar eclipse. And it’s been re-confirmed since. How about now?

A round crescent world and its moon, with a distant sun.

Vote to help name solar system’s largest unnamed body

2007 OR10 has one of the reddest surfaces ever found in our solar system’s distant Kuiper Belt. Vote to help decide between 3 possible official names.

Illustration of asteroid with cratered surface, cut in half, exposing a yellow center with orange lines emanating to the surface.

Iron volcano eruptions on metal asteroids?

New research suggests that volcanoes of molten iron might have erupted onto the surface of metallic asteroids.

Astronomers release 1st real black hole image

On Wednesday, in coordinated press conferences across the globe, researchers unveiled a history-making image – the 1st ever – of the “shadow” of a supermassive black hole.

Moon and Earth.

Watch the Israeli moon landing April 11

Israel’s Beresheet spacecraft will attempt the country’s 1st-ever and 1st commercial landing on the moon on Thursday, April 11. The landing is expected between 19:00 and 20:00 UTC (2 to 3 p.m. CDT).

Graph showing 2 solar cycles - the current one and the coming one - of nearly equal strength.

Latest predictions for the coming solar cycle

Solar physicists predict another weak 11-year solar cycle ahead. At the same time, they expect the coming cycle to break the trend of weakening solar activity seen over the past 4 cycles, and they add there’s “no indication we are currently approaching a Maunder-type minimum in solar activity.”

Mars Express orbiting Mars.

Scientists close in on mysterious Mars methane

For the first time, an in-situ measurement of methane on Mars – made by NASA’s Curiosity rover – has been independently confirmed from orbit, by ESA’s Mars Express. Could it be a clue to Mars life?

Thin slice of meteorite.

New evidence for life in a Martian meteorite?

The discovery of fossilized microbes in Martian meteorites has been claimed before. Now scientists in Hungary add a new study of the ALH-77005 meteorite, with some intriguing new evidence.

Curiosity rover captured 2 solar eclipses on Mars

Watch Mars’ moons Phobos and Deimos cross the sun in a pair of solar eclipses last month, in these animations made from images from the Curiosity rover’s cameras.

A distant star, orbited by a fragmenting planet.

Astronomers find a planet fragment orbiting a dead star

The star is a white dwarf, a cool, dead, dense star like our sun some 6 billion years from now. The planet fragment – made of heavy metals – survived a system-wide cataclysm that followed the star’s death.

Long, thin dark streaks on the wall of a crater.

Did deep groundwater cause these mysterious dark streaks on Mars?

Mars is a cold, dry desert, but a new study provides tantalizing evidence for liquid water deep below its surface. If it exists, this Mars groundwater might cause the weird dark streaks in Martian craters and canyons.

Dust devil tracks.

See Mars via images from ExoMars orbiter

These images from ESA’s ExoMars orbiter show Mars in all of its diverse geological wonder. Also, if you look carefully, you can spy NASA’s newest Mars mission, the InSight lander!

A diffuse galaxy.

Astronomers find 2nd galaxy lacking dark matter

Dark matter theory – the idea that a huge fraction of our universe exists in a form we can’t see – is a cornerstone of modern cosmology. Ironically, galaxies lacking dark matter might help confirm the theory.