A comet will come closer to Earth today than any other has in more than 30 years - and here is how you can spot it.
Nasa reported that the space rock, called Comet P/2016 BA14, will pass by at a distance of 2.2million miles from Earth at 2.30pm today (Tuesday, March 22).
Skywatchers can either watch the celestial show using a telescope, or see it on livestream by The Virtual Telescope Project.
While the distance is no threat to our planet it makes it the third closest flyby of a comet in recorded history.
Paul Chodas, manager of NASA's centre of Near Earth Object (NEO) Studies, said: "Comet P/2016 BA14 is not a threat.
"Instead, it is an excellent opportunity for scientific advancement on the study of comets."
P/2016 BA14 will be closest to Earth at 2.30pm UK time (10.30am EDT) today (Tuesday March 22).
The comet was spotted in January this year and is believed to be a fragment of a larger comet, 252P/LINEAR, which passed by the Earth yesterday morning.
The smaller of the two was initially feared to be a dangerous asteroid but when scientists looked closer, they discovered it has a tail, making it a comet.
Mr Chodas added: "Comet P/2016 BA14 is possibly a fragment of 252P/LINEAR. The two could be related because their orbits are so remarkably similar.
"We know comets are relatively fragile things, as in 1993 when comet Shoemaker-Levy 9 was discovered and its pieces linked to a flyby of Jupiter.
"Perhaps during a previous pass through the inner-solar system, or during a distant flyby of Jupiter, a chunk that we now know of as BA14 might have broken off of 252P."