Natalie Portman is "seriously" considering a lead role in 'Jupiter Ascending'.

The Oscar-winning actress - who is taking some time off from Hollywood following the birth of her son Aleph with partner Benjamin Millipied last June - has read The Script for the sci-fi film from Lana and Andy Wachowski and is keen to take part.

The Warner Bros. film is set to begin shooting autumn 2012 following the completion of their work on 'Cloud Atlas', according to The Los Angeles Times.

It would be the first serious sci-fi film Natalie has taken part in for some time - although she has previously had big roles in 'Star Wars' and comedy 'Mars Attacks!'.

She was rumoured for a role in Alfonso Cuaron's 'Gravity' but pulled out, making way for Sandra Bullock to take on the lead.

The only other project Natalie - who won the Best Actress Oscar for her portrayal of psychologically troubled ballerina in 'Black Swan' - is expected to take part in is the forthcoming 'Thor' sequel as Jane Foster alongside Chris Hemsworth as the titular Marvel character.