Comic Dara O'Briain is celebrating his latest ratings hit this week - as his BBC show Stargazing Live has attracted almost four million viewers every night.
Dara presented the show with celebrity physicist Prof Brian Cox and fellow Irish star Liz Bonnin reported live from South Africa on the night sky.
On Monday night the BBC Two show kicked off with a massive 3.8 million viewers and on Tuesday it performed extremely well again with 3.6 million viewers.
The three day TV event tied up last night after a successful run which also included an appearance by the last man ever to walk on the moon, Eugene Cernan.
In the first show Dara and Brian looked at moons, on Tuesday night they investigated the galaxy and last night they spoke about the search for life in space.
The pair broadcasted live from the control room of the Jodrell Bank radio observatory in Cheshire and guests also included other top scientists.
And last night they attempted to turn off all the lights in the Somerset town Dulverton to make it easier to see the stars.
Every night Liz provided reports live from the Southern African Large Telescope and spoke about the differences between the stars visible in the northern and southern hemispheres.
Liz has a degree in biochemistry and a masters in wild animal biology and conservation and has presented the BBC show Bang Goes The Theory. Dara studied in UCD for a degree in mathematical physics and Brian is former popstar turned physicist.
Astronomy Ireland were thrilled to see Stargazing Live back on BBC Two and called on RTE to start a similar programme.
Astronomer David Moore said: "Absolutely. For many years I did a spot on Den TV and some of the people who watched it are now working for us and running university programmes in Ireland and abroad. One of our young members went on to become a student of Stephen Hawking and did his Ph.D with Hawking.
"We have been promoting it (Stargazing Live) on our 16,000 strong mailing list. It's a great show. It's aimed at the general public and that's what we love about it. It's not a real specialist documentary. The whole idea is people dipping into it might get hooked."