China's Rocket Innovations, Martian Secrets Unveiled, and Cosmic Light Displays

Anna: Hello and welcome to Astronomy Daily, your

daily dose of everything happening in the

cosmos. I'm, your host, Anna, and I'm

thrilled to bring you today's roundup of the

most fascinating developments in space and

astronomy. We've got an action packed episode

for you today. We'll explore China's latest

achievements with their methane powered

rocket launch and their upcoming asteroid

sample return mission. Then we'll dive into

some intriguing Mars mysteries as, scientists

may have finally solved the puzzle of those

strange dark streaks on the Martian surface.

Plus, we'll uncover the truth behind that

mysterious light streak that appeared over US

skies during a recent aurora storm. Get

updates on SpaceX's busy Starlink launch

schedule, and check in with NASA's

Perseverance rover as it explores an ancient

region on Mars that could hold clues to the

planet's watery past. So stick around

as we journey through today's most exciting

space news right here on Astronomy Daily.

China has made significant strides in the

commercial space race with Beijing based

Landspace Technology successfully launching

their Jukui 2E Y2 carrier rocket

last Saturday. The rocket blasted off from

the Juquan satellite launch center in

northwest China at 12:12pm local time,

marking the fifth flight for the Jukui 2

series. What makes this launch

particularly noteworthy is that Landspace is

doubling down on methane as a rocket fuel. In

fact, the company made history in July

2023 when it became the world's first

to successfully launch a methane liquid

oxygen rocket launch, beating out major

competitors like Elon Musk's SpaceX

and Jeff Bezos's Blue Origin.

Methane is gaining popularity in the

aerospace industry for good reason. It's

considered less polluting than traditional

rocket fuels, offers enhanced safety, and

comes with a lower price tag. These

advantages make methane particularly well

suited as a propellant for reusable rockets,

which is exactly what Landspace is working

toward. Saturday's launch successfully

deployed six satellites into orbit, showing

progress from their previous launches. Their

first successful methane powered launch

didn't carry any real satellites, while their

second launch in December 2023 managed to

place three satellites into orbit. This

latest mission carried payloads developed by

Chinese firm Spacedee, including a radar

satellite, two multispectral satellites, and

three satellites for scientific experiments.

This launch included some technical

improvements that will support Landspace's

reusability goals. The company implemented a

new propulsion method that involved chilling

both liquid oxygen and methane below their

boiling points to boost thrust. Landspace

founder and CEO Zhang Chung Wu has

indicated that the company is actively

developing reusable rockets with test

launches expected in the second half of 2025.

The race to develop reusable rockets has

intensified since SpaceX demonstrated how

they can dramatically lower costs for for

launch vehicles and space transportation.

Chinese commercial space companies have been

particularly active since 2014, when the

government opened the industry to private

investment, with land space being one of the

earliest and best funded entrants in the

field.

In more news from China today, China is

ramping up its ambitious space exploration

program with the upcoming launch of the

Tianwen 2 asteroid probe, scheduled for late

May from the Qichong satellite launch center.

After being transported to the launch area on

May 14, the spacecraft is currently

undergoing final inspections before its

historic journey begins. This mission

represents China's first attempt to collect

samples from interplanetary space, marking

another significant milestone in the

country's rapidly advancing space program.

The primary Target is asteroid 2016

HO3, a small 100 meter

asteroid that follows a unique orbit around

Earth as what scientists call a, quasi

satellite. While it doesn't orbit Earth

directly like our moon, it follows a path

around the sun that keeps it as a constant

companion to our planet. Once

Tianwen 2 reaches its destination, it will

deploy a mechanical arm to scoop up dust

samples from the asteroid's surface. But the

mission doesn't end there. The spacecraft

will also explore Comet 311P,

providing an unprecedented opportunity to

study two distinct celestial bodies during a

single mission. This sample return

mission follows in the footsteps of similar

successful ventures by other spacefaring

nations, including the United States and

Japan, who have previously landed on

asteroids. However, this represents China's

first venture into asteroid exploration and

sample collection. The Tianwen 2 mission

comes on the heels of China's impressive

achievement earlier this year with the Chang'

E 6 lunar probe, which made history as the

first mission to bring back samples from the

moon's far side. This consistent progress

demonstrates China's growing capabilities and

determination to establish itself as a

leading space power. Looking ahead,

China has already announced plans for Tianwen

3, an even more ambitious mission scheduled

for around 2028 that aims to return

samples from Mars. These missions

reflect the intensifying space race between

China and the United States as both nations

accelerate their exploration plans with

increasingly sophisticated missions. The

upcoming Tianwen 2 launch will be closely

watched by the international scientific

community as the samples it returns could

provide valuable insights into the

composition of asteroids and the early solar

system, potentially offering clues about the

origins of life on Earth.

Next, let's take a look at the first of two

stories we have today from the Red Planet

dark streaks that mysteriously appear on

Martian slopes and have puzzled planetary

scientists since they were first observed in

the late 1970s. These features, known

as slope streaks, are typically darker than

their surroundings and can extend for

hundreds of meters down steep terrain.

In 2011, researchers discovered similar

but shorter lived features called recurrent

slope lineae, or rsl, triggering an

intense debate about their origins. For

decades, scientists have been divided on

whether these streaks are evidence of

something extraordinary liquid water flowing

on the Martian surface or merely the result

of dry processes like dust movements.

A new study published in Nature

Communications may have finally resolved this

long standing mystery. A big focus of

Mars research is understanding modern day

processes on Mars, including the possibility

of liquid water on the surface, explains

Adamus Valentinus from Brown University, who

co authored the research. The water

hypothesis suggested that small amounts from

buried ice, subsurface aquifers, or

unusually humid air could mix with salt

to create briny flows capable of persisting

even in Mars's freezing conditions.

To settle the debate, Valentinas and his

colleague Dr. Valentin Bickle from the

University of Bern used machine learning to

create the first global catalog of these

features. After training their algorithm

on confirmed slope streak sightings, they

analyzed over 86,000 high resolution

satellite images identifying 500,000

individual slope streaks. Once we had this

global map, we could compare it to databases

of temperature, wind speed, hydration,

rockslide activity, and other factors, says

Bickle. Then we could look for

correlations over hundreds of thousands of

cases. Their findings were conclusive.

These features appear more frequently in

areas with above average wind speed and dust

deposition factors that strongly suggest a

dry origin rather than liquid water.

Neither type of streak shows associations

with factors you'd expect if water were

involved, such as specific slope

orientations, high humidity, or temperature

fluctuations. The researchers concluded

that slope streaks most likely form when

layers of fine dust suddenly slide off steep

slopes, while RSLs are more commonly found

in places with frequent rockfalls and dust

devils, those mini whirlwinds of dust and

grit that dance across the Martian surface.

Our findings suggest that Martian slopes

currently do not experience seasonal

transient flows of liquid water or brines,

underscoring the dry desert. Like Nature of

Mars, the authors write, this conclusion

has important implications for future Mars

missions, as it suggests these areas are

unlikely to be habitable environments,

potentially easing planetary protection

constraints for landed missions targeting

these regions.

Meanwhile, a mystery back here on Earth on

the night of Saturday, May 17, sky watchers

across the United States were treated to an

unexpected light show. A brilliant stream of

whitish light stretched across the night sky,

visible as far south as New Mexico, with a

major auroral display Already underway Due to

solar particles hitting Earth's magnetic

field, many observers initially thought they

were witnessing Steve. That's the strong

thermal emission velocity enhancement, a

rare aurora adjacent phenomenon that creates

white mauve streaks in the ionosphere. But

this wasn't Steve at all. Astronomer Jonathan

McDowell, who specializes in tracking

activity in Earth orbit, quickly identified

the true source, a fuel dump from the upper

stage of China's Zhuque 2 rocket at an

altitude of about 250 kilometers.

As reported earlier in the show, just Hours

earlier, at 04:12 UTC,

Beijing based startup Landspace Technology

had launched their Jukui 2E Y2

carrier rocket carrying six satellites into

orbit. The striking visual effect occurred

when the rocket's upper stage released unused

methalox fuel, a mixture of methane and

liquid oxygen, while passing over the

southwestern United States. At that

altitude, right in Earth's ionosphere, the

fuel created a chemical light show through

reactions with the charged plasma

environment. According to physicists,

these reactions can include ion molecule,

charge exchange, electron ion recombination,

and optical emissions from chemiluminescence.

In m simpler terms, we when rocket fuel

interacts with the ionosphere at night, it

can create a long lived glow visible from the

ground. While we've seen rocket fuel create

strange spirals in the sky before this

particular manifestation, a straight white

streak resembling Steve appears to be

something new. With methalox gaining

popularity as a rocket fuel due to its

efficiency, cleaner combustion, and

potential for in situ production on Mars, we

might see more of these unusual light shows

in our night skies in the future. So if you

spotted this mysterious streak on May 17, now

you know it wasn't an aurora or Steve, but

rather the after effects of humanity's

expanding activities in space, bringing a bit

of cosmic chemistry right to our doorstep.

Okay, moving on. Let's take a look at this

week's launch schedule. SpaceX is ramping up

for an exceptionally busy week, with at least

three Starlink satellite launches planned

across both coasts of the United States. The

ambitious schedule reflects the company's

accelerating pace as it works to expand its

global Internet constellation. The week began

with a Falcon 9 scheduled to launch Starlink

Group 12 to 15 from Space Launch Complex

40 at Cape Canaveral in Florida. However,

the countdown was held at just under 2 1/2

minutes before liftoff. Unlike most Starlink

missions, which typically have four hour

launch windows, this one had an unusually

short 35 minute window. The hold

resulted in a scrub as Falcon 9's highly

chilled fuel warms too quickly to allow for a

reset within the same window. The mission

would have carried 23 satellites, including

both standard V2 mini satellites and

specialized direct to cell variants. Later

in the week, another Florida launch is

planned, with Starlink Group 1222 lifting off

from the same pad on Saturday. This

mission will similarly carry a mixture of

Starlink V2 mini and and direct to cell

satellites on a southeasterly trajectory over

the Atlantic Ocean. But perhaps the most

significant launch of the week will come from

Vandenberg Space Force Base in California.

On Sunday, SpaceX plans to initiate

construction of an entirely new orbital shell

for the Starlink Constellation with the Group

171 mission. This launch represents

a major milestone as the first Starlink

mission targeting a polar sun synchronous

orbit at a 97 degree inclination since the

earlier Group 3 deployments which used older

V1.5 satellites. The

polar orbit will enable Starlink to provide

coverage at high latitudes, including the

Arctic and Antarctic region's areas that have

historically had limited access to reliable

Internet connectivity. This expansion into

polar orbits represents the next phase in

SpaceX's plan to provide truly global

coverage. All three missions will include

landing attempts on SpaceX's autonomous drone

ships positioned in the Atlantic and Pacific

Oceans. These recoveries continue to

demonstrate the company's reusability model,

which has revolutionized launch economics,

with some boosters now having flown more than

two dozen missions. If all launches proceed

as planned, SpaceX will surpass 60 missions

for 2025, continuing their record

breaking launch cadence and and further

cementing their dominance in the commercial

launch market.

Also this week we have launches planned from

China and Russia. The first of several

Chinese launches expected this week will

launch from Launch Complex 201

at AH, the Wencheng Space Launch Site in

China on Tuesday, May 20 at

11:50 UTC. There is no

information regarding the mission's payload

at present, however, the hazard warning

notices published indicate that the Changjang

7A CZ7A will

fly due east from the launch site. Another

Chinese launch is expected on Wednesday, May

21 at 400 UTC during

a launch window extending from 3:54 until

4:15 UTC. A Kinetica 1 will lift off

from Site 130 at Juquan Satellite Launch

center in China. Published hazard notices

indicate a southwesterly trajectory for the

flight. This mission will serve as the first

Kinetica 1 mission of 2025 and the

seventh overall. And finally rounding out a

busy week of launches, a Russian Soyuz

2.1 A with a Fregat M M 4th stage

will launch an unknown payload on Friday, May

23rd at 0700 UTC from the

Plesetsk Cosmodrome in northwestern Russia.

This will be the third launch for a Soyuz in

2025 and the 113th orbital

launch attempt worldwide this year.

M Finally today, let's return to Mars.

NASA's Perseverance rover is embarking on an

exciting new chapter of its Martian

adventure, exploring a region that scientists

believe could harbor some of the oldest rocks

on the entire planet. After spending five

months investigating Witch Hazel Hill, the

nuclear powered rover has now moved on to a

new area of interest dubbed Crocodylon.

The name, which means the crocodile in

Norwegian, was chosen by mission scientists

after a mountain ridge on Norway's Prinz

Karls foreland Island. This 73

acre plateau of rocky outcrops

sits downslope to the west and south of Witch

Hazel Hill on the lower slope of Jezero

Crater's rim. What makes Crocodylan

particularly tantalizing is its geological

age. These rocks formed before Jezero Crater

was even created, dating back to Mars

earliest geological period known as the

Noachian Era. In fact, they're among the

oldest accessible rocks on the entire Martian

surface. An early investigation of the

region revealed the presence of clay

minerals, which require liquid water to form.

This provides compelling evidence that

abundant water once flowed across this

ancient landscape long before an asteroid

impact created Jezero Crater. Clay

minerals are especially important in the

search for past life because they're known on

Earth to preserve organic compounds, the

fundamental building blocks of life. Ken

Farley, deputy project scientist for

Perseverance, explained the significance if

we find a potential biosignature here, it

would most likely be from an entirely

different and much earlier epoch of Mars

evolution than the one we found last year in

the crater with Chayava Falls.

That previous discovery featured chemical

signatures and structures that could have

been formed by ancient life. The

rover, which celebrated its

1,500th day of surface operations

on May 9, is currently analyzing a rocky

outcrop called Copper Cove.

Orbital data suggests that other areas of

Crocodylon may contain olivine and carbonate

minerals. While olivine forms from

magma, carbonates typically develop when rock

reacts with carbon dioxide dissolved in

liquid water. On Earth, carbonates

excel at, preserving fossilized microbial

life, recording ancient climate conditions.

The Perseverance team has also implemented a

new sampling strategy, allowing some cored

samples to remain unsealed. This gives the

mission flexibility to replace earlier

samples if more scientifically compelling

features are discovered down the road.

Katie Stack, Morgan Perseverance's acting

project scientist, noted, we have been

exploring Mars for over four years, and every

single filled sample tube we have on board

has its own unique and compelling story to

tell. As Perseverance continues its

methodical exploration of this ancient

Martian landscape, each rock it analyzes

brings us closer to understanding Mars's

distant past and potentially answering

whether life once existed on our neighboring

planet.

Well, what an incredible week in space and

astronomy news. We've m truly spanned the

solar system in today's episode. From

groundbreaking rocket launches here on Earth

to the mysteries of Mars and beyond, the

pace of innovation in space technology

continues to accelerate, with China's

landspace joining the race to develop methane

powered rockets, technology that could

revolutionize our access to space through

reusability and efficiency. Their

upcoming Tianwen 2 mission represents another

significant step in asteroid exploration,

joining efforts by NASA, JAXA and other space

agencies to understand these ancient

celestial bodies. Looking ahead,

watch for SpaceX's continued expansion of

their Starlink constellation, particularly

the new Polar Orbit Shell, which will enhance

global coverage. The Russian Soyuz launch

carrying its mysterious payload will

certainly be worth monitoring as well. On

Mars, Perseverance's exploration of the

ancient Crocodilan region may yield some of

the most significant discoveries yet about

the Red Planet's early history. The rover's

investigation of those Noachian era rocks

could fundamentally change our understanding

of Mars's potential habitability. And the

scientific detective work that solved both

the mystery of Mars slope streaks and the

strange light phenomenon over the United

States reminds us that space science is

constantly evolving, with new observations

challenging our previous assumptions. The

coming weeks promise even more excitement as

these missions progress and new launches take

flight. Our understanding of the cosmos grows

richer with each passing day.

And that's all for this episode of Astronomy

Daily. I'm Anna and I want to thank you

for joining me on this cosmic journey through

today's most fascinating space and astronomy

news. If you're hungry for more space content

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In this episode