In 2023 the James Webb Space Telescope spotted a geyser of water vapor extending more than 80% of the Earth’s diameter erupting from Saturn’s moon Enceladus. If life does exist in the salty ocean of Enceladus shielded from the rest of the Universe by a thick layer of ice and rock its nature remains a mystery.

755-Geyser of Life-Maybe

More than 25 years ago Voyager 1 took a picture of the Earth from beyond Pluto's orbit. This image shows our home planet to be an isolated tiny pale blue dot floating in the vastness of space.

244E-256-Pale Blue Dot

Very small fast moving asteroids pass through our solar system.About once a month an object like 2023 KU4  enters our atmosphere, releases the energy of approximately 2.4 tons of TNT,  explodes at an altitude of about 280,000 feet, creates a spectacular light show, produces a sonic boom that is barely audible, and rains pieces of itself on the ground for meteorite hunters to discover.  Check out the fireball log on the American Meteor Society website for examples.

754-Very Fast Moving Objects In The Night Sky

We will probably never know the details of the collision that put my Catalina Sky Survey teammate Carson Fuls' recent discovery, 2016 HD3, on its current path. What we do know is that Carson's new space rock is about 25 feet in diameter and in the next 100 years will make 53 close approaches to planet Earth and 12 to our sister planet Venus. In 2016 this small object passed to near both the Earth and our Moon. It's 322 day orbit around the Sun can someday bring it to about a quarter of the Moon's distance from where we live.

243E-255-Earth Venus Express

Very small fast moving asteroids pass through our solar system.About once a month an object like 2023 KU4 enters our atmosphere, releases the energy of approximately 2.4 tons of TNT, explodes at an altitude of about 280,000 feet, creates a spectacular light show, produces a sonic boom that is barely audible, and rains pieces of itself on the ground for meteorite hunters to discover. Check out the fireball log on the American Meteor Society website for examples.

753-Impactor Lights Up the Night Sky

Blinded by inappropriate outdoor night lighting, much of humanity is now unaware of the rich beauty of the Universe which surrounds them. To see sights which have inspired countless generations of lovers, poets, scientists, authors, artists, mathematicians, and dreamers people must travel out of their artificial light domes to one of the few remote locations which offer the opportunity to view the natural night sky.

242E-254-Blinded

My Catalina Sky Survey teammate Jacqueline Fazekas was asteroid hunting , in the evening twilight, with our 60 inch telescope on Mt. Lemmon, Arizona when she discovered a very large object in an unusual orbit. Rest assured that astronomers will continue to track Jacqueline's discovery to make sure that its orbit does not change to make it a threat as it passes near Jupiter, Earth, and Venus.

752-Lunker

Covered by a blanket of lunar soil to protect it from BB sized meteoroids arriving a gunshot speeds, a village is nestled in a large crater on our moon.  The individual structures are connected together by tunnels.  The site was chosen to access the water and metals which were brought to the site by asteroid impacts.

241E-253-Lunar Village

To the amazement of NASA scientists, when the NASA OSIRIS-Rex touched down on the surface of Bennu to obtain a sample, the sample collecting arm continued to sink into Bennu until rocket thrusters reversed its downward motion and allowing it to escape.

751-Ball Pit

Jupiter protects us as well as directs some objects our way.Jupiter, the king of our solar system, has provided us with a place to stand and air to breathe.

Jupiter protects us as well as directs some objects our way. Jupiter, the king of our solar system, has provided us with a place to stand and air to breathe.

240E-252-The King

A real "Science Snack" for anyone who is interested in the extraterrestrial.Dr. Al Grauer is a member of the Catalina Sky Survey which has led the world in near Earth asteroid discoveries for 17 of the past 19 years.The music is "Eternity" by John Lyell.Astronomy Asteroids Space NASA Comets Earth Impact Aliens

Humans are slamming projectiles into space rocks. These experiments will give us the know how to deal with a dangerous space rock which has our number on it

750-Asteroid Slam(538)

The moon is being hit by objects in the present epoch.Fresh lunar craters tell us about objects which enter the Earth-Moon system.

The moon is being hit by objects in the present epoch. Fresh lunar craters tell us about objects which enter the Earth-Moon system.

239E-251-Fresh Lunar Craters

Jupiter and Saturn helped to produce where we live.Our home planet was formed after a period of chaos in the solar systemToday our solar system is a pretty calm place. However, meteorites we find on Earth as well as the cratering we observe on our Moon, Mercury, Mars, and other bodies suggest that our solar system was born wild and stayed that way for a while. There is also the puzzling fact that our sparsely packed inner solar system is very different from the densely packed, close in, planetary systems which have formed about nearby stars.

Jupiter and Saturn helped to produce where we live. Our home planet was formed after a period of chaos in the solar system Today our solar system is a pretty calm place. However, meteorites we find on Earth as well as the cratering we observe on our Moon, Mercury, Mars, and other bodies suggest that our solar system was born wild and stayed that way for a while. There is also the puzzling fact that our sparsely packed inner solar system is very different from the densely packed, close in, planetary systems which have formed about nearby stars.

238E-250-Born Wild

In 1972 Apollo 16 astronauts took an ultraviolet image of the Earth from the Moon which shows that like the Sun ,the Earth too, has a faint corona of gas surrounding it. Scientists are just beginning to explore how Earth's glow relates to our weather and climate.

749-Earth Glow(537)

Traveling an additional billion miles beyond Pluto, the New Horizons spacecraft is now sending back data on 2014 MU69, a strange snow man shaped object which orbits the Sun once every 298 years. The New Horizons is spacecraft is likely to continue its lonely odyssey until the end of time.

748-Ultima Thule(536)

Rocky metallic asteroid can stand the heat.A block and a half sized asteroid makes visits to Mercury, Venus, Earth, Mars, and Jupiter.

Rocky metallic asteroid can stand the heat. A block and a half sized asteroid makes visits to Mercury, Venus, Earth, Mars, and Jupiter.

237E-249-Tough Tourist

In our Milky Way Galaxy alone there are probably 25 billion planets located within the habitable zone of its star where there could be air to breathe and liquid water on its surface. The search is on for advanced civilizations .

747-Alone or Not(535)

What happens when an asteroid is heading in our direction.A close approaching asteroid was observed as it passed between the Earth and our Moon.

What happens when an asteroid is heading in our direction. A close approaching asteroid was observed as it passed between the Earth and our Moon.

236E-248-Incoming

Without followup data, many if not most of the Earth approaching objects would be lost as they move away from us leaving us with no idea when they might return to near Earth space or perhaps even strike our home planet.

746-Followups(534)

My Catalina Sky Survey teammates have discovered an asteroid which could be a potential mining target. Mining asteroids may be a much cheaper way to get the raw materials that space colonists need when compared to the cost of lugging supplies up from the surface of our planet. Using the abundant solar energy in space, water ice from asteroids can be turned into hydrogen and oxygen which is ideal rocket fuel. The metals which many asteroids contain can be turned into the items space explorers need.

235E-247-Potential Mining Target

This podcast has sent me on so many rabbit hole expeditions, I’ve thoroughly enjoyed each and every one. Excellent information, succinctly presented. Thank you!

Thank You!

Listening to Dr. Al Grauer talk about asteroids, comets, moons, planets and other awesome astronomy topics is an auditory treat!

Mind Blowing Informative!

A real "Science Snack" for anyone who is interested in the extraterrestrial. Dr. Al Grauer is a member of the Catalina Sky Survey which has led the world in near Earth asteroid discoveries for 17 of the past 19 years. The music is "Eternity" by John Lyell. Astronomy Asteroids Space NASA Comets Earth Impact Aliens

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The best podcast episodes of the most interesting stories and things. From skyping someone while they're in space, to tracking down and meeting a telephone scammer in person, to the story of a Galapagos. These episodes will keep you and all your friends entertained and captivated for hours. Learn something new in every episode! Add episodes you're interested into your queue below!