27 June 2023
An expedition to hunt for fragments of a possible interstellar meteor has found 40 tiny iron spherules on the sea floor – but whether they are truly interstellar is controversial
15 February 2023
As we speed towards a mysterious new bubble of interstellar space, new insights are revealing its exotic chemistry, strange waves and vast bubbles, and their ramifications for life on Earth
2 January 2023
The two interstellar meteorites identified so far seem to be significantly stronger than local meteorites, which may mean they formed in supernovae
2 December 2022
A spacecraft equipped with a "sail" made from plasma could build up speed by repeatedly crossing the boundary at the edge of the solar system, just as an albatross soars by taking advantage of regions of different wind speeds
12 August 2022
A pair of astronomers say that classified US government sensors detected an interstellar meteor hitting Earth in 2014. Now they want to mount a $1.6 million expedition to find fragments of it on the sea floor
15 March 2021
An estimate of the number of interstellar objects passing through the solar system suggests we should expect seven visitors a year, and some - three per century - could even be from another galaxy
2 December 2019
In 2017, a mysterious asteroid from a different solar system passed near Earth. Astrophysicist Michele Bannister has the inside story on ’Oumuamua
25 October 2017
An icy comet just hurtled past the sun on a strange path that suggests it came from outside our solar system, making it the first such interloper we've ever spotted
