The actual event will get underway at 4.30pm UK time, though details of the announcement are set to be revealed before that
Speculation has been rife ahead of Monday's announcement
Three of those speaking at Nasa’s press event are also authors on a major paper to be delivered at a conference this week
The conference begins at 4.30pm UK time, or 11.30am in Nasa's local Eastern Daylight Time
Despite Nigel Farage's prediction that the UK Independence party will cause an “earthquake” in British politics at the European Parliament elections, Britons give Ukip as much chance of winning as finding life on Mars.
Tombs: this weird restaurant in Ahmedabad, India is famous for its milk tea and the tombs between the tables. The owner, who claims to have opened the restaurant 40 years ago, says he does not know who is buried there.
Scientists say it's too early to say whether Ceres could support microbial life, but a visit from the Dawn spacecraft in early 2015 should provide answers
The vessel is being woken, hopefully, by the 'most important alarm clock in the solar system'
The project hopes to establish human life on Mars by 2025, with the 'rigorous' selection process set to begin this year, but many hurdles remain in place
As China eyes a manned mission to the Moon, Nasa’s Curiosity has found proof that there was once water – and thus potentially simple life – on the Red Planet
The 600lb robot succesfully detached from the Chang'e-3 lander this weekend
US research shows there is a ‘better than 50/50’ chance that life was seeded between bodies in the Solar System
Since the US shelved its space programme in the aftermath of the 2008 crash, China has forged ahead, says Steve Connor
New research shows distinctive rock is more than twice as old as previously thought – and could expose signs of ancient Martian life
The image above (click for full screen) was taken from within the shadow of Saturn and shows an area 404,880 miles (651,591 kilometers) across.
View From The Sofa: Adventure Show, BBC Scotland / /Ironman, ironman.com