a krishna teja

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What Is a Planet?

While many people can point to a picture of Jupiter or Saturn and call it a "planet," the definition of this word is much more subtle and has changed …

Solar System

A planned space hotel hopes to welcome guests by 2022 — for a cost of almost $800,000 a night

Looking for a getaway that offers unmatched views of sunrises and sunsets? Specifically, 384 of them in 12 days?<p>Try outer space.<p>Houston-based Orion Span hopes to launch the “first luxury hotel in space” — the 35-by-14-foot Aurora Station — by late 2021 and bring guests on board the following year. …

Space Exploration

Incredible Hubble discovery in deep space could rewrite rules of physics

The Hubble Space Telescope has been in our orbit for nearly 30 years, returning data and photographs – both beautiful and scientifically important – …

Universe

If The Universe Is 13.8 Billion Years Old, How Can We See 46 Billion Light Years Away?

There are a few fundamental facts about the Universe — its origin, its history, and what it is today — that are awfully hard to wrap your head around. One of them is the Big Bang, or the idea that the Universe began a certain time ago: 13.8 billion years ago to be precise. That’s the first moment …

Galaxies

The Three Meanings Of E=mc^2, Einstein's Most Famous Equation

For hundreds of years, there was an immutable law of physics that was never challenged: that in any reaction occurring in the Universe, mass was conserved. That no matter what you put in, what reacted, and what came out, the sum of what you began with and the sum of what you ended with would be …

Physics

How We Created a Mini 'Gamma Ray Burst' in the Lab for the First Time

<i>This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & …

Universe

How NASA Is Prepping Its New Megarocket to Shoot for the Moon in 2019

It's going to be a busy year for engineers who are building NASA's new Space Launch System (SLS) and Orion capsule in order to ready both vehicles …

US Air Force's New Missile-Warning Satellite Launching Tonight: Watch It Live

<b>Update for Jan. 19:</b> ULA's launch of an Atlas V rocket carrying the SBIRS GEO Flight 4 missile-warning satellite for the U.S. Air Force is now …

Space Exploration

Get Ready for the 'Super Blue Blood Moon' Eclipse of Jan. 31!

Almost two and a half years have passed since the moon last plunged completely into the Earth's shadow. But if you live in Hawaii, Alaska or the …

Astronomical Odds: Becoming an Astrophysicist Keeps Getting Tougher

<i>Paul Sutter is an astrophysicist at The Ohio State University and the chief scientist at COSI science center. Sutter is also host of "Ask a Spaceman"</i> …

Atlas V Rocket Launches New Missile-Warning Satellite for US Air Force

The U.S. Air Force has a new missile-tracking sentinel in orbit.<p>A United Launch Alliance Atlas V rocket launched the new missile-warning satellite …

Space Exploration

No, an Asteroid Is Not Going to Collide with Earth in February

In recent days, a few media outlets have reported (in some cases, rather sensationally) that a "potentially hazardous" asteroid will fly close to …

In Photos: India's PSLV rocket Launches Cartosat-2 Satellite & 30 More!

A Successful Comeback<p>Credit: ISRO<p>On Thursday, Jan. 11, 2018, the Indian Polar Satellite Launch Vehicle successfully launched 31 satellites, making a …

Watch Japan's Epsilon Rocket Launch the ASNARO-2 Radar Earth Satellite

A Japanese Epsilon rocket launched a new Earth-observation satellite into space this week, notching a third successful flight for the solid-fueled …

After Delay, Rocket Lab to Attempt 2nd Electron Launch Today: How to Watch

The small-rocket startup Rocket Lab will attempt to launch its first customer payloads into orbit tonight (Jan. 19), and you can watch it live online.<p>…

Space Exploration

Christa McAuliffe's Lost Challenger Lessons to be Taught on Space Station

Two educators turned astronauts will film science lessons while aboard the International Space Station that were originally planned to be performed …

Rocket Lab Launches 2nd Test Flight of Electron Small-Satellite Booster

An Electron rocket built by the commercial startup Rocket Lab successfully launched on its second test flight from New Zealand, carrying the …

Space Exploration

Cool collaborative student animation of Sagan's "The Pale Blue Dot" speech

The Pale Blue Dot was made as a tribute to Carl Sagan "as the final project for the Animation 01 course at Ringling College of Art and …

Titan has even more in common with Earth than we thought

Mapping Titan<p>After years of sorting through data from the legendary Cassini mission, researchers from Cornell University have finally created a full …

What's the Super Blue Blood Moon? The Rare Event Explained

It's a lunar trifecta.<p>The new year has just begun, but it’s already gracing stargazers with some seriously loony lunar activity, and it’s only going …

SpaceX's latest mission prepares to make history

With its maiden launch approaching, the Falcon Heavy will become the world's most powerful rocket.<p>When the world's most powerful rocket leaves the …

NASA Shows Einstein Was Right: Our Sun Is Losing Mass—and Its Grip on Our Solar System

As our sun gets older, it's losing mass, and so its gravitational pull becomes weaker. As a result, the orbits of all the planets in our solar system …

What Would You See As You Fell Into A Black Hole?

Black holes are some of the most perplexing objects in the entire Universe. Objects so dense, where gravitation is so strong, that nothing, not even light, can ever escape from it. Many physical black holes have been identified, from stellar-mass scale ones in our own galaxy to supermassive ones at …

Black Holes

NASA Is Testing a Mini Nuclear Reactor to Keep The Lights on When We Get to Mars

There aren't many other options.<p>Once we've figured out the logistics of getting people to Mars, there's the small matter of providing power for the …

Astrophotography hits a high in Vizag

Capturing the night sky is one the most fascinating as well as difficult feats to accomplish for a photographer. Photographing this captivating …

Meteorite hunters find first fragments of Michigan meteor

Meteorite hunters who flocked to Detroit from across the U.S. after a meteor exploded are finding the fragments.

Astronomy

Citizen scientists discover new exoplanet system named K2-138

Four new planets orbiting a distant star have been discovered by citizen scientists around the world, a report has revealed.<p>Researchers discovered …

Space Photos of the Week: You Just Try to Snap a Pic at 100,000 MPH

Get ready, because this week’s space photos are nothing short of epic. First we’re starting out close to home, just 43 light minutes away at Jupiter. …

Propellantless propulsion system could keep satellites in orbit, reduce space junk

One of the main factors limiting the life of satellites is how much propellant they can carry to execute orbital corrections. Now scientists in Spain …

5 Photos Of Moons And Planets That Might Have Ice In Our Solar System

Space holds plenty of secrets and researchers and astronomers have only been able to study a fraction of it. While they know it holds the ingredients …