Pristine, in astronomical terms, describes a comet that has never passed close enough to a star to be transformed by its searing heat.
Comet from solar system's edge triggered a winter that killed the dinosaurs 66 mn-years-ago: Harvard study
These long-period comets take about 200 years to orbit the Sun and we can expect similar impacts every 250 million to 750 million years.
The mission will allow scientists to know about the history of the solar system as never seen before.
NASA's time-lapse of the Comet ISON shows it journeying towards the Sun, before it broke apart in 2013
ISON had a tail that was 20 times wider than the full Moon and its head was so bright that it could have been seen in the “pre-dawn eye with the unaided eye”.
While NASA has brought back comet dust and solar wind particles, it’s never attempted to sample one of the nearly 1 million known asteroids lurking in our solar system until now.
NASA’s Hubble telescope captured close-up shots of the coma of the comet which is the cloud of gas and dust that surrounds the icy nucleus of the comet.
Perseid meteor shower peaks tonight: Interesting facts, tips to spot the year's best meteor shower display
Following the faint Delta Aquariids meteor shower in July come the Perseids, which is arguably the best and brightest meteor shower throughout the year.
The asteroid was 'nudged' into Earth's near neighbourhood by the gravitational pull of planets as it orbits through the solar system.
Comet Atlas was a long-period comet, one that enters the Solar System once in 5,476 years.
The Legacy Survey of Space and Time telescope should be able to confirm or rule out if Planet X is a black hole or not.
NEO's are comets or asteroids that have been "nudged by the gravitational attraction of nearby planets into orbits that allow them to enter the Earth’s neighbourhood."
New type of Trojan asteroid discovered near Jupiter has an orbit like an asteroid but the tail of a comet
It is believed that Trojan asteroids have large amounts of ice beneath their surfaces, but there was never any evidence untill now.
The comet was discovered on 29 December last year by the ATLAS robotic astronomical survey system.
Interstellar object 2I/Borisov is very different from other comets that have formed in our solar system
Gas coming from 2I/Borisov contained high amounts of carbon monoxide indicating the object had large concentrations of carbon monoxide ice.
Since its discovery in 2017, scientists were puzzled by its origin and nature and some thought it might be an alien spacecraft.
In the last few years, scientists have found a variety of exotic impact-related materials all over the globe.
Mammals had lived in the large shadow of the dinosaurs, never getting bigger than a small dog until the mass extinction.
The asteroid is classified as potentially hazardous but there is no chance of it colliding with our planet.
The Hubble telescope caught some glam shots, over the weekend, from a distance of 420 million kilometers.