One of the first profiles of interstellar comet Borisov has been published, and it looks about the same as most other comets. What it doesn't look like is the first interstellar object, Oumuamua, which made its closest pass by Earth exactly two years ago today.

An international team of scientists is constructing the Large Synoptic Survey Telescope in Chile, which will be an essential tool for asteroids alert.

The largest asteroid to pass as close to the Earth in a century “slipped through” Nasa’s detection systems, internal emails reveal. Named 2019 OK by scientists, the asteroid nearly passed by undetected as it came five times closer to Earth than the moon, documents obtained by Buzzfeed via freedom of information requests revealed.

When it comes to mining space for water, the best target may not be the moon: Entrepreneurs' richest options are likely to be asteroids that are larger and closer to Earth. A recent study suggested that roughly 1,000 water-rich, or hydrated, asteroids near our planet are easier to reach than the lunar surface is. While most of these space rocks are only a few feet in size, more than 25 of them should be large enough to each provide significant water.

Scientists at NASA are tracking six asteroids that will be heading in the direction of our planet during the next few weeks, and one of them is larger than the Empire State Building. But, first things first. Take a deep breath. Experts are assuring us there’s no reason to panic.

NASA has spotted the biggest asteroid that will approach Earth this month. According to the agency’s Center for Near Earth Object Studies (CNEOS), the potentially hazardous asteroid (PHA) is bigger than the Taipei 101 skyscraper. CNEOS has identified the massive asteroid as 2006 QQ23. As indicated in the agency’s tracking database, the asteroid is currently traveling with a velocity of 10,400 miles per hour. It is estimated to have a diameter of around 1,870 feet.

Analysis carried out by researchers at the University of Glasgow has revealed “unprecedented details” about how asteroid strikes could create temporary sources of liquid water on Mars.

When 2019 MO was destroyed while entering earth's atmosphere NASA was clueless about its coming, but now they know that another asteroid heading toward earth

Taking inspiration from SpaceX founder Elon Musk, astrophysicist Neil DeGrasse Tyson came up with a drastic plan to make Mars habitable for humans. According to Tyson, redirecting an asteroid or comet and intentionally crashing it into Mars could make the Red Planet more livable.

NASA spacecraft finds that Ceres is full of water. By Alexandra Witze.

It's official - NASA's Asteroid Redirect mission has entered its closing down phase, which means we can't expect to see a giant boulder orbiting our Moon any time soon. Bummer. Asteroid Redirect was started in 2015 with the goal to create the first-ever mission combining robot and human efforts. The plan was to send a robotic crew to a near-Earth asteroid, grab a huge rock from it, and redirect it in a stable orbit around the Moon.

Asteroid 2017 001 made a close pass by Earth, but wasn't detected until three days later.

Asteroid Florence will fly by Earth on 1 September at a safe distance of seven million km or "18 Earth-Moon" distances. Florence is about 4.4km wide and is known to be one of the largest near-Earth asteroids according to Nasa. Near-Earth objects are heavenly bodies that enter the Earth's neighbourhood influenced by the gravity of nearby planets.

Tremendous amounts of soot, lofted into the air from global wildfires following a massive asteroid strike 66 million years ago, would have plunged Earth into darkness for nearly two years, new research finds.

An asteroid named Florence that will safely sweep past Earth on Sept. 1 is the largest object to give our planet a close shave since NASA began tracking these types of near-Earth asteroids, an agency official said. The space rock measures 2.7 miles (4.4 kilometers) across. It will pass by Earth at a safe distance of 4.4 million miles (7 million kilometers), or nearly 18 times the distance between Earth and the moon.

Humans have witnessed many cataclysmic volcanic eruptions, from the one that destroyed Pompeii in 79 A.D. to the extraordinary Krakatoa eruption of 1883. But around the world right now there are about 20 so-called “supervolcanoes” that could outdo them all. One of these monster volcanoes lurks beneath Yellowstone National Park. The Yellowstone Caldera is an enormous craterlike depression measuring 30 miles by 45 miles and filled with molten material (magma). If it were to blast its innards out in a super-eruption, it’s no exaggeration to say that the human race could be imperiled.

Astronomers around the world will turn their eyes to the sky Thursday as a roughly 20-metre-wide asteroid will fly well within the moon's orbit, about 50,000 kilometres above Earth. While this asteroid currently poses no threat to Earth, scientists are hoping to gather information to refine its orbit. With government agencies, they are also preparing for a day when a similarly sized asteroid could enter Earth's atmosphere.

An asteroid the size of a house will zoom past the Earth on Thursday at a distance of some 26,000 miles, NASA said. That's actually fairly close, when you consider that the moon is about 239,000 miles away. “It's damn close," Rolf Densing, head of the European Space Operations Centre in Darmstadt, Germany, told The Telegraph. "The farthest satellites are 22,000 miles out, so this is indeed a close miss," he said.

The asteroid that came “damn close” to slamming into the Earth this week could cause utter devastation several decades down the road, and scientists can’t rule out an eventual collision...

A few weeks ago, we reported on a small object visiting from beyond our solar system. Now astronomers have scrutinized data from this object, which has been given the name `Oumuamua, and which must have traveled through space for millions of years before its chance encounter with our star system. The conclusion is that it’s a dark, reddish, highly-elongated rocky or high-metal-content object. And, indeed, it is the first known asteroid from interstellar space. These new results were published today (November 20, 2017) in the peer-reviewed journal Nature.