In the immediate vicinity of a supermassive black hole 's event horizon, conditions are pretty wild. But travel a little farther out, and other objects can be snared in its gravitational influence - like the stars orbiting the supermassive black hole at the centre of our galaxy, Sagittarius A*.
According to a new paper, it's not just stars. There could be oodles of planets orbiting supermassive black holes , caught in their gravitational hold, but far out beyond immediate danger - up to tens of light-years away.
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Next batch of Planet’s upgraded Earth-imaging satellites ready for launch –
A dozen SuperDove nanosatellites with improved vision are set to join Planet’s Earth-observing fleet Tuesday night (U.S. time) after riding into orbit aboard an Indian Polar Satellite Launch Vehicle alongside an Indian mapping payload.
The 12 SuperDove satellites will lift off on India’s PSLV at 10:58 p.m. EST Tuesday (0358 GMT Wednesday) from the Satish Dhawan Space Center, located on Sriharikota Island on India’s southeastern coast.
ISU's Role In Discovering New Stars and Planets | Iowa Public Radio
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ISU Distinguished Professor of Physics and Astronomy Steve Kawaler and Cornell College President Jonathan Brand discuss the latest news in their respective academic fields.
Iowa State University Astrophysicist Steve Kawaler says his team listens to the notes sung by stars, since the pitch from a star vibrating can indicate its size and mass.
Kawaler joins host Ben Kieffer to talk about how ISU has assisted NASA by analyzing star data from its TESS Mission, which is a space telecope that observes stars to find signs of previously undiscovered planets orbiting it. Also on this podcast edition of River to River, Cornell College President Jonathan Brand discusses a range of recent news related to the college as well as the future of higher education at Cornell.
'Bleak' U.N. Report on a Planet in Peril Looms Over New Climate Talks - The New York Times
With world leaders gathering in Madrid next week for their annual bargaining session over how to avert a climate catastrophe, the latest assessment issued by the United Nations said Tuesday that greenhouse gas emissions are still rising dangerously.
"The summary findings are bleak," said the annual assessment, which is produced by the United Nations Environment Program and is formally known as the Emissions Gap Report. Countries have failed to halt the rise of greenhouse gas emissions despite repeated warnings from scientists, with China and the United States , the two biggest polluters, further increasing their emissions last year.
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Meet Hygiea, the Smallest Dwarf Planet in Our Solar System - Eos
Around 2 billion years ago, two large rock bodies hit each other in the main asteroid belt, a region between the orbits of Mars and Jupiter populated by fragments of rocks of various sizes. The impactor, with a size ranging from 75 to 150 kilometers in diameter, hit a body at least 4 times larger.
Hygiea itself has been considered an asteroid since it was discovered in 1849 by Italian astronomer Annibale de Gasparis . With a diameter just over 430 kilometers, it is the fourth-largest object in the main asteroid belt. New observations obtained with the Very Large Telescope ( VLT ), located in Chile and operated by the European Southern Observatory, have revealed that Hygiea is also round.
The Solar System According to Carolyn Porco | The Planetary Society
There aren't many people who have been more influential in bringing us pretty pictures of the planets, and the scientific insights that come from them, than Carolyn Porco. She was on the imaging team for Voyager, helping to calculate the camera exposure times that brought us our only up-close looks at the rings of Uranus and Neptune. Then, as the leader of the Cassini imaging team, she was responsible for bringing us 13 years of amazing pictures of Saturn.
A fun conversation with the leader of the Cassini imaging team, and an audio tour of the transit of Mercury with astronomer Jay Pasachoff.
A Rocky Planet in This Oddball Solar System Would Have Stunning Skies | Discover Magazine
Over the past couple of decades, astronomers have discovered thousands of alien planets and solar systems. These worlds come in a wide variety of arrangements, many of which are quite different from what we see in our own solar system.
Some have giant planets that swing through the planetary systems in stretched-out, or "eccentric," elliptical orbits, unlike the nearly circular orbits of planets like Jupiter and Saturn.
Bright planets take over Central Florida sky this weekend
Orlando, Fla- – The two brightest planets in our sky will join together for a second time this year. Over the pasts several nights, Jupiter and Venus have been inching closer to each other and this weekend, will put on a show in the evening sky.
These planets will be much easier to see than a meteor shower. After sunset, look southwest and the two brightest objects in the sky will quickly grab your attention. Venus will lie just below Jupiter and slightly to its left.
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