Observing

Seek out 1998 OR2, the brightest predicted near-Earth asteroid encounter of 2020

12 April 2020 Ade Ashford

A near-Earth object (NEO) and potentially hazardous asteroid (PHA) with the catchy official name of 52768 (1998 OR2) passes just 16.4 lunar distances (6.3 million kilometres) from Earth at 09:56 UT on Wednesday, 29 April 2020. Here’s our guide to locating this fascinating asteroid in 15-cm (6-inch) aperture telescopes and smaller from the UK this month.

News

ALMA discovers cold dust around nearest star

3 November 2017 Astronomy Now

The ALMA Observatory in Chile has detected dust around the closest star to the Solar System, Proxima Centauri. These new observations reveal the glow coming from cold dust in a region between one to four times as far from Proxima Centauri as the Earth is from the Sun. The data also hint at the presence of an even cooler outer dust belt and may indicate the presence of an elaborate planetary system.

Picture This

Best image of Alpha Centauri A and B

29 August 2016 Astronomy Now

The NASA/ESA Hubble Space Telescope has given us this stunning view of the closest bright stars Alpha Centauri A (on the left) and Alpha Centauri B (on the right), at a distance of 4.3 light-years from the Earth. The Alpha Centauri group is completed by a faint red dwarf, Proxima Centauri (not shown), recently revealed to possess an Earth-like planet orbiting in its habitable zone.

News

Newly discovered planet has three suns

8 July 2016 Astronomy Now

A team of astronomers led by the University of Arizona has discovered a planet known as HD 131399Ab in a unique position between three stars about 340 light-years from Earth. The finding shows that massive planets may be found on long and possibly unstable orbits in multi-star systems, expanding current models of how star systems and their planets form.

Picture This

Rebel rebel

18 January 2016 Astronomy Now

Most galaxies possess a majestic spiral or elliptical structure. About a quarter of galaxies, though, defy such conventional, rounded aesthetics, instead sporting a messy, indefinable shape. Known as irregular galaxies, this group includes NGC 5408, the galaxy that has been snapped here by the NASA/ESA Hubble Space Telescope.

News

Follow a live Proxima Centauri exoplanet hunt with the Pale Red Dot campaign

15 January 2016 Astronomy Now

Pale Red Dot is an international search for an Earth-like exoplanet around the closest star to us, Proxima Centauri. It will be one of the few outreach campaigns allowing the general public to witness the scientific process of data acquisition in modern observatories via blog posts and social media updates. The Pale Red Dot campaign will run from January to April 2016.