|Origin||Sydney, New South Wales, Australia|
|Genres||Hip hop / Reggae|
|Associated acts||The Herd
|Members||Shannon Kennedy (aka Ozi Batla)
Shane Roberts (aka Sir Robbo)
Chris Hamer-Smith (aka Chasm)
The group formed when Kennedy decided to collaborate with producers Roberts and Hamer-Smith in 2006.
"The original concept for Chasm and I was to do a production album, with various MCs and singers," Roberts says. "We'd both worked separately with Batla in the past, he was our main MC, so we gave him the beats [first]. He was really taken with them and expressed a desire to have them all for himself. That was how it started."
The resulting album, Exit Strategy was released in September 2006 and was selected by Triple J as its first feature album for 2007. The album features guests such as Lotek, Hau from Koolism, Urthboy, Ben Ezra (ESL), Gina Mitchell (Fbi’s Basslines), DJ Skoob (NSW DMC Champ), 2Buck, Murda1, Lotek and BVA (Mnemonic Ascent), as well as Jane Tyrell (The Herd). Tracks from the album such as "A Bright Tomorrow", "Done The Sums" and "Rewind The Tape" all receiving airplay on Triple J  and community radio stations across Australia. On the back of the album release Astronomy Class undertook a national tour covering five states and seventeen destinations over three months.
When asked how the name of the band came about, Kennedy advised (in an interview with Scene Magazine):
"A theme started to emerge that kind of had an astral flavour. There’s a bit of a history in hip hop and also reggae of doing astral/space themes. As I kept writing, there was sort of a narrative coming out about that same theme going on – it just started to stick after a while."
It just came about because of a few of the first tracks that I wrote. Midnight At The Observatory and also Brink Of War and Exist Strategy. There is a sci-fi theme there and I am a pretty big sci-fi fan. We kept on the sci-fi theme with War Of The Worlds and a few other tracks that are on this album as well. There is a hiphop and reggae tradition as well of that kind of outer space theme. We just were drawing on that as inspiration.— Ozi Batla
Marking the International Year of Astronomy, Astronomy Class released their second album, Pursuit Of Happiness, on 2 May 2009. The album features guest vocals by Vida-Sunshyne, The Tongue, Diafrix, Kween G (KillaQueenz), and Ash Grunwald. The group toured nationally in support of the release between May and June 2009.
- Exit Strategy - Elefant Traks (9 September 2006)
- Pursuit of Happiness - Elefant Traks (2 May 2009)
- Mekong Delta Sunrise - Elefant Traks (25 April 2014)
- Chasm (2004)
- Beyond The Beat Tape (2008)
- This Is How We Never Die (2012)
- Wild Colonial (2010)
- "Astronomy Class - "This is Hip Hop, Baby"". The Dwarf. 11 April 2007. Archived from the original on 5 August 2008. Retrieved 10 March 2008.
- Paton, Bec (November 2006). "Astronomy Class". Cyclic Defrost. Archived from the original on 27 September 2011. Retrieved 10 March 2008.
- "Astronomy Class". The Age Newspaper. 10 November 2006. Retrieved 10 March 2008.
- "Triple J Album review - Exit Strategy". Triple J. 27 December 2006. Archived from the original on 22 March 2008. Retrieved 10 March 2008.
- "Debut Album From Chasm". Groove On. 5 February 2008. Archived from the original on 24 September 2015. Retrieved 10 March 2008.
- J Play track listing
- PBS 106.7FM Album review
- "Program Info". FBi Radio. Archived from the original on 17 February 2011. Retrieved 9 January 2015.
- "Astronomy Class". Beat Magazine. 25 April 2007. Retrieved 10 March 2008.[dead link]
- "Astronomy Class - Space Madness". Scene Magazine. 6 June 2007. Archived from the original on 28 October 2007. Retrieved 13 March 2008.
- Blazer, Zoltan (26 May 2009). "Astronomy Class". Musicfeeds.com.au. Archived from the original on 15 June 2009. Retrieved 2 June 2009.
- "Astronomy Class support Lily Allen!". Access All Areas. 16 January 2007. Retrieved 10 March 2008.[dead link]