Sentences with phrase «known asteroid»

ESA is set to support Japan's «touch - and - go» Hayabusa - 2 spacecraft, now en route to a little - known asteroid, helping to boost the scientific return from this audacious mission.

A team of astronomers has characterized the smallest known asteroid using Earth - based telescopes.

The largest known asteroid, Ceres, has a diameter of 579 miles (926 kilometers).

This view of 1,000 - mile - wide Caloris basin — among the largest known asteroid impacts in the solar system — shows how lava (orange) filled the blast site before new craters excavated the original basin (purple).

Known asteroid impacts were too small or in the wrong location to do the job.

The largest known asteroid is about 600 miles across, but many are much smaller.

«Tail discovered on long - known asteroid.»

The team used a new search technique that also identified the oldest known asteroid family, which extends throughout the inner region of the main asteroid belt.

When a known asteroid passed within 28,000 kilometers of Earth on February 15, astronomers hoped it would serve as a wake - up call about the danger of meteorite impacts.

Then they searched a database of known asteroids for ones that could have produced rocks that follow those orbits.

Since his facility boasts one of the most powerful privately owned telescopes in the country, he has also worked with NASA on projects like tracking the orbits of hundreds of faintly visible known asteroids to determine whether they are on a collision course with Earth.

He also has spotted a number of previously known asteroids, and also thought he discovered a near - Earth asteroid — the kind that can threaten Earth — but it wasn't seen again.

There are only a dozen known asteroids and dwarf planets with enough mass to boil the oceans (2x10 ^ 18 kg), these include (Vesta 2x10 ^ 20 kg) and Pluto (10 ^ 22 kg), however none of these objects will intersect Earth's orbit and pose a threat to tardigrades.

NEOWISE is also characterizing previously known asteroids and comets to better understand their sizes and compositions.

«While many known asteroids have passed by closer to Earth than Florence will... all of those were estimated to be smaller,» Paul Chodas, manager of NASA's Center for Near - Earth Object Studies, said in a statement.

None of the approximately 750,000 known asteroids and comets in the Solar System is thought to have originated outside it, despite models of the formation of planetary systems suggesting that orbital migration of giant planets ejects a large fraction of the original planetesimals into interstellar space1.

Not exact matches

As we face future known threats like war and climate change, and unknown threats like an asteroid impact or new disease, Downey said that that's the kind of knowledge we should want to have.

Getting economists to describe it is a bit like asking an astrophysicist to give you a detailed picture of what would happen if a giant asteroid hit the earth — no one really knows because, thank goodness, it has never happened before.

Scientists have been watching «Oumuamua, the first known interstellar asteroid, with fascination since it landed on their screens in October.

While I no longer believe the earth is just 6,000 years old, I still live in the tension of unanswered questions about the universe, and death, and brains, and Neanderthals, and whatever Neil deGrasse Tyson's got to say on public television about the earth getting burned up by the sun or our species going extinct after an asteroid hits.

We know of only one lineage of primates, a little form called purgatorius that lived before this potential asteroid hit.

We know of only one lineage of primates, a little animal called Purgatorius, that lived before this hypothetical asteroid hit.

Did you know AIDS attracts to Asteroid doomsday impact?

No longer does playing a game mean that your child is spending mindless hours in front of a TV shooting aliens or asteroids.

If you're new to the parenting game, you should know this is a huge plus, since a sleeping baby should never be awoken — unless there's an emergency, like a tsunami or asteroid on a crash course with earth.

The newly discovered family, along with all the previously known families, accounted for almost every asteroid in this region.

Over 30 years ago, scientists proposed a large asteroid impact to explain the disparate elevations of Mars» northern and southern hemispheres; the theory became known as the «single impact hypothesis.»

The agency's controversial Asteroid Redirect Mission no longer calls for redirecting an asteroid into high lunAsteroid Redirect Mission no longer calls for redirecting an asteroid into high lunasteroid into high lunar orbit

The meteorite, dubbed Northwest Africa (NWA) 7034, contains a concentration of water by weight about ten times higher than in any of the other 100 or so known Martian meteorites — those rare rocks that get ejected from the Martian surface into space when an asteroid hits the planet, and eventually find their way to Earth.

Astronomers knew the initial solar system was full of tiny rocks, and somehow they grew into planets, asteroids and everything else.

NASA's other major asteroid - deflection initiative is the opposite in almost every way: the splashy, controversial, exploration - oriented proposal currently known as the Asteroid Redirect asteroid - deflection initiative is the opposite in almost every way: the splashy, controversial, exploration - oriented proposal currently known as the Asteroid Redirect Asteroid Redirect Mission.

Software on Tucker's computer compares his fresh images with maps of known stars and asteroids.

This map shows the overlapping orbits (blue) of the 1,400 known Potentially Hazardous Asteroids — objects more than about 400 feet wide that can approach within 4.6 million miles of Earth.

«We know there is an asteroid out there with our name on it,» adds Chesley.

Researchers have also searched for the existence of some asteroid, among all known, that may have been fragmented and resulted in the meteorite.

Currently, 1,573 asteroids of this type are known so researchers are investigating to what extent they can pose a danger.

The crater is 285 miles across and 8 miles deep and no doubt was created when another asteroid slammed into Vesta.

Asteroid 2015 BZ509, also known as Bee - Zed, takes 12 years to make one complete orbit around the Sun.

The broad, bright plains known as Sputnik Planum seem to be covered by nitrogen glaciers; these flow gloppily, and quickly erase craters made by crashing asteroids.

Now that people know what an asteroid smashup looks like, «I'd be quite surprised if someone doesn't find another one this year,» Jewitt says.

«It's been known for 15 years that about 15 per cent of near - Earth asteroids are binary,» says Katarina Miljkovic at the Institute of Earth Physics in Paris, France.

«Now we know where not to point the camera,» says Cheng, referring to large shadowed regions of the asteroid's surface visible in the new images.

Many young stars known to host planets also possess disks containing dust and icy grains, particles produced by collisions among asteroids and comets also orbiting the star.

This is the first known binary asteroid also classified as a comet.

The fact that 288P is so different from all other known binary asteroids raises some questions about whether it is not just a coincidence that it presents such unique properties.

This makes 288P the first known binary asteroid that is also classified as a main - belt comet.

Roughly 1000 near - Earth asteroids are known, ranging in size up to approximately 32 kilometres (1036 Ganymed).

Almost nothing is known about the dinosaurs that lived in Africa at the end of the Cretaceous period 66 million years ago, just before they were wiped out by the impact of a giant asteroid.

When Planetary Resources founders Peter Diamandis and Eric C. Anderson, who have known Lewicki since his days at SEDS, needed a CEO to help them get their asteroid mining company off the ground, they went straight to Lewicki.

An asteroid, also known as the Chicxulub Impactor, hit Earth some 66 million years ago, causing a crater 180 km wide.