Astronomy

Here's How Big A Massive Black Hole Can Actually Get

This question originally appeared on Quora. Answer by Martin Silvertant.<p>As the size of a black hole defined by the Schwarzschild radius relates to …

Black Holes

Tabby’s “Alien-Megastructures” Star Had Begun to Dim Again

Since it was first discovered, Tabby’s Star has baffled scientists all across the world. The reason for this is that it doesn’t act like any other …

Universe

NASA Photos Of Mars Show The Red Planet’s Unique Beauty

The United States didn't successfully get a spacecraft to Mars until 1971 after years of failed attempts and months after Russia (then the USSR) had …

Mars

The Science Of Sunrises: 4 Fun Facts

If there was a top 10 of weather-related photos that are tweeted, I am guessing that sunrises are going to be on that list. People always seem fascinated with the peacefulness and beauty of them. And frankly, they are photogenic. I see so many sunrise pictures that I have become immune to them, but …

Space Science

How the Humble CPU Launched NASA’s Golden Age of Space Exploration

Even today, retro-computing is carrying humanity to the edge of interstellar space.<p>In 1962, NASA launched the Mariner 2 probe past Venus, marking the first successful planetary flyby for the agency. It was done with an incredibly primitive computer that hardly fits the bill of anything we'd …

Space Exploration

52 of Cassini's most beautiful postcards from the outer solar system

The spacecraft completely changed our view of Saturn and her moons<p>One of NASA's greatest spacecraft will call it quits on September 15, 2017. The Cassini spacecraft has made countless discoveries during its sojourn to Saturn and its surrounding moons. It has also sent back nearly 400,000 images, …

Planets

A Mars Survival Guide: Finding Food, Water, and Shelter on the Red Planet

Classical science fiction tales about Mars have often been about bug-eyed Martians invading Earth for its precious resources. The reality is that …

Emerging Technology

Uncovering and Understanding Newly-Found Supernovas

One of the most exciting things that an astronomer could possibly see in their line of work has to be a stellar explosion – or in other words a …

Universe

ESO’s Extremely Large Telescope, World’s Biggest Yet, Starts Construction In Chile

After 12 years of planning and consultations, work on the world’s largest telescope yet began Friday in northern Chile. The European Southern …

Universe

This is what a micrometeoroid striking a spacecraft sounds like

*plonk*<p>Last week, NASA reported that a micrometeoroid struck its Lunar Reconnaissance Orbiter in October 2014. NASA noted that the impact didn’t damage the orbiter, but made for a “fascinating example” for how the data from the spacecraft can be used in unexpected ways, including what that impact …

Space Exploration

This Week in Geographic History, May 29 – June 4

05/28/2017 · by alukacs119 · in Classroom Ideas, Main, Weekly Warm-Up. ·<p>Here’s an advance look at some of the “This Day in Geographic History” (TDIGH) events coming up this week. For each date, we’ve matched it with a map or visual, background information, and a classroom activity so you can plan …

ISRO

'Huge naked-eye beams': spectacular aurora australis lights up the southern skies

Onlookers were treated to a stellar show on Sunday when the phenomena appeared above Tasmania and New Zealand’s South Island<p>The southern-most points of Australia and New Zealand have been treated to an extraordinary spectacle as unusually colourful aurora australis lights swept across the …

Space Science

The June night sky

Jupiter rules the heavens, but keep an eye open for noctilucent clouds that gleam low in the sky after nightfall and before dawn<p>June Night Sky chart<p>June brings our summer solstice on the 21st and sees Jupiter remain as the stand-out object in a night sky that is blighted by persistent twilight at …

Space Science

A dazzling aurora borealis light show captivates the internet

Saturday evening stargazers were treated to one of the trippiest natural phenomenons Earth has to offer: a naked eye-visible aurora borealis.<p>The "northern lights," as they are often called, originate with our sun. Solar storms that occur there emit streams of charged particles which help to trigger …

Northern Lights

New alien planet boasts rare triple suns

Artist's Concept of HD 1885 Ab (NASA/JPL-Caltech)<p>Eat your heart out, Tatooine: A newly discovered alien planet has not one, not two, but three suns …

Exoplanets

2017 May 29 - Beneath Jupiter

<b>Beneath Jupiter</b> <b><br>Image Credit:</b> NASA, Juno, SwRI, MSSS, Gerald Eichstädt & Seán Doran<p><b>Explanation:</b> Jupiter is stranger than we knew. NASA's Juno …

Space Science

India’s Giant Metrewave Radio Telescope is on track to get a major upgrade by 2018

The Giant Metrewave Radio Telescope (<b>GMRT</b>), located about ten kilometers east of Narayangaon on the Pune-Nasik highway (NH50) is getting a major …

Universe

Two-Sided Alien Worlds That Have Magma Oceans And Rainstorms

Volcanoes on Earth are quite spectacular in their own right. They are significant features of natural beauty. However, in comparison to those found …

Planets

Is Space Curved? Can We See The Milky Way In The Past?

Is it possible that space-time is curved in such a way that one (or many) of the galaxies we see in telescopes is actually our own Milky Way a few billion years earlier?<p>It is mathematically <i>possible</i> for a universe to be shaped this way, but not our Universe. Our Universe is as close to flat as we …

Universe

Ask Ethan: What Does The Edge Of The Universe Look Like?

13.8 billion years ago, the Universe as we know it began with the hot Big Bang. Over that time, space itself has expanded, the matter has undergone gravitational attraction, and the result is the Universe we see today. But as vast as it all is, there’s a limit to what we can see. Beyond a certain …

Space Science

These new images of Jupiter show its clouds in stunning detail

Damn, Jupiter looks sexy.<p>After nearly a year in orbit, the Juno spacecraft is starting to crack some of Jupiter’s many mysteries.<p>This week, the journals <i>Science</i> and <i>Geophysical Research Letters</i> published the first batch of scientific findings about Jupiter, based on Juno’s trips there. Discoveries …

Space Exploration

The Sun's Magnetic Dynamo Is Weakening

Astronomers now confirm that the Sun’s magnetic dynamo is likely to eventually disappear causing our star to lose its 11 year magnetic cycle. In fact, a billion years from now, they say, interplanetary spaceflight could become even more treacherous, since the Sun’s protective magnetic heliosphere …

Exoplanets

Star Should Have Gone Supernova, But it Imploded Into a Black Hole Instead

Collapsing stars are a rare thing to witness. And when astronomers are able to catch a star in the final phase of its evolution, it is a veritable …

ISRO's next rocket could carry Indians into space, says the space agency's chairman

<b>New Delhi:</b> An indigenous rocket as heavy as 200 full-grown Asian elephants could well be the one taking "Indians into space from Indian soil", as the …

ISRO

Curious Kids: What Plants Could Grow in the Goldilocks Zone of Space?

<i>This is an article from Curious Kids, a new series aimed at children. The Conversation is asking kids to send in questions they'd like an expert to</i> …

Planetary Habitability

Our galaxy produces 9 trillion kilograms of antimatter a second—how?

New study proposes a (relatively) mundane source: a specific class of supernova.<p>Antimatter is rare in this Universe, but the Universe is a pretty big …

Universe

Fast radio bursts: stirrings from a galaxy far, far away

Scientists studying FRBs – energy explosions from distant parts of the universe – are on to something vitally important. But what causes them?<p>In summer 2006, astronomer Duncan Lorimer started work on a seemingly routine piece of scientific research. He and a team of students began examining old …

Neutron Stars

Stars can turn into black holes without a supernova

As a rule, astronomers believe that stars have to explode in a supernova before they collapse into black holes. That violent death is always the cue, right? Not necessarily. Researchers have spotted a massive star 22 million light years away, N6946-BH1, that appears to have skipped the supernova …

Supernovae

Skywatch: Big planets Jupiter and Saturn will dazzle night skies in June

Summer soon arrives, and the big planets <b>Jupiter</b> and <b>Saturn</b> will entertain evening onlookers, <b>Venus</b> will distract morning dog walkers and <b>Mars</b> starts a season-long hiatus.<p>Catch a fattening, waxing <b>moon</b> as it approaches the bright Jupiter (-2.2 magnitude) in the southern sky on the evening of June 2 and …

Space Science

A Rs 1,300 Cr facility for testing drones and other defence weapons is being set up in Karnataka

India is getting a new high-tech facility to test its drones, air-to-ground weapons and other equipment at Challakere in Karnataka’s Chitradurga …

ISRO