Astronaut pee could keep plants alive in space for decades
23 March 2018
On missions to Mars and beyond, astronauts will have to grow their own food. Urine has been shown in space simulations to keep wheat and soy alive over 20 years
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Found 674 results for dwarf planet
Dwarf planet Ceres has a water cycle but it’s not like Earth’s
14 March 2018
Ceres, a distant dwarf planet, hosts sheets of ice just under its surface. In the summer, some of this ice may sublimate and coat shadowy crater walls in frost
Oceans on alien worlds may form when the air explodes in flames
14 February 2018
When hydrogen and oxygen combine in a planet’s atmosphere, they can ignite into a ball of fire and then leave behind liquid water oceans that would be good for life
Interstellar: The bizarre visitor from a far-off solar system
31 January 2018
First seen in October 2017, the space rock 'Oumuamua looks like a skyscraper tumbling through space – and challenges our ideas of how planetary systems form
We may be able to see mountains and valleys on distant worlds
12 January 2018
If alien planets have canyons and mountains like ours, we may be able to catch a glimpse of them in an exoplanet’s shadow as it passes in front of its star
Hidden exoplanets could be revealed by echoing light
11 January 2018
Reflected light from a star’s flares may help us find otherwise invisible worlds. These exoplanets could be hit by powerful blasts, but may still host life
Planet X: We are closing in on the solar system's new occupant
13 December 2017
Evidence for a new body perhaps the size of Neptune way out in the shadows is building – but if there is a ninth planet, it’s unlike any we have seen
That interstellar asteroid could be a shard of a shredded planet
8 December 2017
'Oumuamua, an oddly shaped asteroid from beyond our solar system, recently passed by. It may have formed when a planet was ripped into fragments by its star
Planets near dangerous stars could shield alien life under smog
4 December 2017
Red and white dwarfs make nasty neighbours due to spurts of deadly radiation, but alien life could still form on planets nearby if shielded by smog or oceans
The message we're sending to nearby aliens is no threat to Earth
20 November 2017
Critics fear provoking hostile extraterrestrials by beaming messages to our closest exoplanets but there's no need to worry, says METI president Douglas Vakoch
